diff --git a/Makefile b/Makefile
index 77576178..2c95e5c2 100644
--- a/Makefile
+++ b/Makefile
@@ -9,7 +9,7 @@
 #   and used to support university teaching.                                  #
 #                                                                             #
 #   This file is part of SWAD core.                                           #
-#   Copyright (C) 1999-2014 Antonio Caņas Vargas                              #
+#   Copyright (C) 1999-2017 Antonio Caņas Vargas                              #
 #                                                                             #
 #   This program is free software: you can redistribute it and/or modify      #
 #   it under the terms of the GNU Affero General Public License as            #
@@ -26,8 +26,8 @@
 #                                                                             #
 ###############################################################################
 
-OBJS = swad_account.o swad_action.o swad_agenda.o swad_announcement.o \
-       swad_assignment.o swad_attendance.o \
+OBJS = swad_account.o swad_action.o swad_agenda.o swad_alert.o \
+       swad_announcement.o swad_assignment.o swad_attendance.o \
        swad_banner.o \
        swad_calendar.o swad_centre.o swad_chat.o swad_config.o \
        swad_connected.o swad_country.o swad_course.o swad_cryptography.o \
diff --git a/swad_ID.c b/swad_ID.c
index a63e6a5d..e4756429 100644
--- a/swad_ID.c
+++ b/swad_ID.c
@@ -538,10 +538,10 @@ void ID_ShowFormOthIDs (void)
          Lay_EndRoundFrame ();
 	}
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+	 Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -710,7 +710,7 @@ void ID_RemoveOtherUsrID (void)
                                &Gbl.Usrs.Other.UsrDat,NULL);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -748,13 +748,13 @@ static void ID_RemoveUsrID (const struct UsrData *UsrDat,bool ItsMe)
 
 	 /***** Show message *****/
 	 sprintf (Gbl.Alert.Txt,Txt_ID_X_removed,UsrID);
-	 Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	}
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_delete_this_ID);
+	 Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_delete_this_ID);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -826,7 +826,7 @@ void ID_NewOtherUsrID (void)
                                &Gbl.Usrs.Other.UsrDat,NULL);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -907,12 +907,12 @@ static void ID_NewUsrID (const struct UsrData *UsrDat,bool ItsMe)
 	}
 
       /***** Show message *****/
-      Lay_ShowAlert (Error ? Lay_WARNING :
-			     Lay_SUCCESS,
+      Ale_ShowAlert (Error ? Ale_WARNING :
+			     Ale_SUCCESS,
 		     Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -951,7 +951,7 @@ void ID_ConfirmOtherUsrID (void)
    unsigned NumIDFound = 0;	// Initialized to avoid warning
 
    /***** Initialize alert type and message *****/
-   Gbl.Alert.Type = Lay_NONE;	// Do not show alert
+   Gbl.Alert.Type = Ale_NONE;	// Do not show alert
 
    /***** Get where we came from *****/
    OriginalActCod = Par_GetParToLong ("OriginalActCod");
@@ -986,7 +986,7 @@ void ID_ConfirmOtherUsrID (void)
 	 if (Gbl.Usrs.Other.UsrDat.IDs.List[NumIDFound].Confirmed)
 	   {
 	    /***** ID found and already confirmed *****/
-            Gbl.Alert.Type = Lay_INFO;
+            Gbl.Alert.Type = Ale_INFO;
 	    sprintf (Gbl.Alert.Txt,Txt_ID_X_had_already_been_confirmed,
 		     Gbl.Usrs.Other.UsrDat.IDs.List[NumIDFound].ID);
 	   }
@@ -998,20 +998,20 @@ void ID_ConfirmOtherUsrID (void)
 	    Gbl.Usrs.Other.UsrDat.IDs.List[NumIDFound].Confirmed = true;
 
 	    /***** Write success message *****/
-	    Gbl.Alert.Type = Lay_SUCCESS;
+	    Gbl.Alert.Type = Ale_SUCCESS;
 	    sprintf (Gbl.Alert.Txt,Txt_The_ID_X_has_been_confirmed,
 		     Gbl.Usrs.Other.UsrDat.IDs.List[NumIDFound].ID);
 	   }
 	}
       else	// User's ID not found
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
          sprintf (Gbl.Alert.Txt,"%s",Txt_User_not_found_or_you_do_not_have_permission_);
 	}
      }
    else	// I can not confirm
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_User_not_found_or_you_do_not_have_permission_);
      }
 
@@ -1032,7 +1032,7 @@ void ID_ConfirmOtherUsrID (void)
 	 break;
       default:
 	 /* Show optional alert */
-	 Lay_ShowPendingAlert ();
+	 Ale_ShowPendingAlert ();
 
 	 /* Show only the updated record of this user */
 	 Rec_ShowSharedUsrRecord (Rec_SHA_RECORD_LIST,
diff --git a/swad_account.c b/swad_account.c
index 8944cd71..8d39f11e 100644
--- a/swad_account.c
+++ b/swad_account.c
@@ -244,7 +244,7 @@ void Acc_CheckIfEmptyAccountExists (void)
 	{
 	 sprintf (Gbl.Alert.Txt,Txt_There_is_no_empty_account_associated_with_your_ID_X_,
 		  ID);
-	 Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 	}
 
       /***** Free structure that stores the query result *****/
@@ -256,7 +256,7 @@ void Acc_CheckIfEmptyAccountExists (void)
    else	// ID not valid
      {
       /**** Show again form to check if I have an account *****/
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_enter_your_ID);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_enter_your_ID);
 
       Acc_ShowFormCheckIfIHaveAccount (Txt_Before_creating_a_new_account_check_if_you_have_been_already_registered_with_your_ID);
      }
@@ -465,7 +465,7 @@ void Acc_ShowFormChangeMyAccount (void)
      {
       fprintf (Gbl.F.Out,"<tr>"
 	                 "<td colspan=\"2\">");
-      Lay_ShowAlert (Lay_WARNING,Txt_Before_going_to_any_other_option_you_must_fill_your_nickname);
+      Ale_ShowAlert (Ale_WARNING,Txt_Before_going_to_any_other_option_you_must_fill_your_nickname);
       fprintf (Gbl.F.Out,"</td>"
 	                 "</tr>");
      }
@@ -479,7 +479,7 @@ void Acc_ShowFormChangeMyAccount (void)
      {
       fprintf (Gbl.F.Out,"<tr>"
 	                 "<td colspan=\"2\">");
-      Lay_ShowAlert (Lay_WARNING,IMustFillEmail ? Txt_Please_fill_in_your_email_address :
+      Ale_ShowAlert (Ale_WARNING,IMustFillEmail ? Txt_Please_fill_in_your_email_address :
 	                                          Txt_Please_check_and_confirm_your_email_address);
       fprintf (Gbl.F.Out,"</td>"
 	                 "</tr>");
@@ -494,7 +494,7 @@ void Acc_ShowFormChangeMyAccount (void)
      {
       fprintf (Gbl.F.Out,"<tr>"
 	                 "<td colspan=\"2\">");
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_fill_in_your_ID);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_fill_in_your_ID);
       fprintf (Gbl.F.Out,"</td>"
 	                 "</tr>");
      }
@@ -635,7 +635,7 @@ static bool Acc_GetParamsNewAccount (char NewNicknameWithoutArroba[Nck_MAX_BYTES
 	 Error = true;
 	 sprintf (Gbl.Alert.Txt,Txt_The_nickname_X_had_been_registered_by_another_user,
 		  NewNicknameWithoutArroba);
-	 Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	}
      }
    else        // New nickname is not valid
@@ -645,7 +645,7 @@ static bool Acc_GetParamsNewAccount (char NewNicknameWithoutArroba[Nck_MAX_BYTES
                NewNicknameWithArroba,
                Nck_MIN_CHARS_NICKNAME_WITHOUT_ARROBA,
                Nck_MAX_CHARS_NICKNAME_WITHOUT_ARROBA);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Step 2/3: Get new email from form *****/
@@ -663,7 +663,7 @@ static bool Acc_GetParamsNewAccount (char NewNicknameWithoutArroba[Nck_MAX_BYTES
 	 Error = true;
 	 sprintf (Gbl.Alert.Txt,Txt_The_email_address_X_had_been_registered_by_another_user,
 		  NewEmail);
-	 Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	}
      }
    else	// New email is not valid
@@ -671,7 +671,7 @@ static bool Acc_GetParamsNewAccount (char NewNicknameWithoutArroba[Nck_MAX_BYTES
       Error = true;
       sprintf (Gbl.Alert.Txt,Txt_The_email_address_entered_X_is_not_valid,
                NewEmail);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Step 3/3: Get new password from form *****/
@@ -680,7 +680,7 @@ static bool Acc_GetParamsNewAccount (char NewNicknameWithoutArroba[Nck_MAX_BYTES
    if (!Pwd_SlowCheckIfPasswordIsGood (NewPlainPassword,NewEncryptedPassword,-1L))        // New password is good?
      {
       Error = true;
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);	// Error message is set in Usr_SlowCheckIfPasswordIsGood
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);	// Error message is set in Usr_SlowCheckIfPasswordIsGood
      }
 
    return !Error;
@@ -817,7 +817,7 @@ void Acc_AfterCreationNewAccount (void)
       sprintf (Gbl.Alert.Txt,Txt_Congratulations_You_have_created_your_account_X_Now_Y_will_request_you_,
 	       Gbl.Usrs.Me.UsrDat.Nickname,
 	       Cfg_PLATFORM_SHORT_NAME);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
       /***** Show form with account data *****/
       Acc_ShowFormChangeMyAccount ();
@@ -844,7 +844,7 @@ void Acc_GetUsrCodAndRemUsrGbl (void)
       Error = true;
 
    if (Error)
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -907,7 +907,7 @@ void Acc_AskIfRemoveMyAccount (void)
 
    /***** Show question and button to remove my user account *****/
    /* Start alert */
-   Lay_ShowAlertAndButton1 (Lay_QUESTION,Txt_Do_you_really_want_to_completely_eliminate_your_user_account);
+   Ale_ShowAlertAndButton1 (Ale_QUESTION,Txt_Do_you_really_want_to_completely_eliminate_your_user_account);
 
    /* Show my record */
    Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Me.UsrDat);
@@ -919,7 +919,7 @@ void Acc_AskIfRemoveMyAccount (void)
    Act_FormEnd ();
 
    /* End alert */
-   Lay_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
+   Ale_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
   }
 
 static void Acc_AskIfRemoveOtherUsrAccount (void)
@@ -932,7 +932,7 @@ static void Acc_AskIfRemoveOtherUsrAccount (void)
      {
       /***** Show question and button to remove user account *****/
       /* Start alert */
-      Lay_ShowAlertAndButton1 (Lay_QUESTION,Txt_Do_you_really_want_to_completely_eliminate_the_following_user);
+      Ale_ShowAlertAndButton1 (Ale_QUESTION,Txt_Do_you_really_want_to_completely_eliminate_the_following_user);
 
       /* Show user's record */
       Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
@@ -945,10 +945,10 @@ static void Acc_AskIfRemoveOtherUsrAccount (void)
       Act_FormEnd ();
 
       /* End alert */
-      Lay_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
+      Ale_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -1007,7 +1007,7 @@ void Acc_CompletelyEliminateAccount (struct UsrData *UsrDat,
      {
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_from_all_his_her_courses,
                UsrDat->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Remove user as administrator of any degree *****/
@@ -1019,7 +1019,7 @@ void Acc_CompletelyEliminateAccount (struct UsrData *UsrDat,
      {
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_as_administrator,
                UsrDat->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Remove user's clipboard in forums *****/
@@ -1034,7 +1034,7 @@ void Acc_CompletelyEliminateAccount (struct UsrData *UsrDat,
      {
       sprintf (Gbl.Alert.Txt,Txt_Briefcase_of_THE_USER_X_has_been_removed,
                UsrDat->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Remove test results made by user in all courses *****/
@@ -1050,7 +1050,7 @@ void Acc_CompletelyEliminateAccount (struct UsrData *UsrDat,
      {
       sprintf (Gbl.Alert.Txt,Txt_Messages_of_THE_USER_X_have_been_deleted,
                UsrDat->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Remove user from tables of banned users *****/
@@ -1097,7 +1097,7 @@ void Acc_CompletelyEliminateAccount (struct UsrData *UsrDat,
      {
       sprintf (Gbl.Alert.Txt,Txt_Photo_of_THE_USER_X_has_been_removed,
                UsrDat->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Remove user *****/
@@ -1106,7 +1106,7 @@ void Acc_CompletelyEliminateAccount (struct UsrData *UsrDat,
      {
       sprintf (Gbl.Alert.Txt,Txt_Record_card_of_THE_USER_X_has_been_removed,
                UsrDat->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
   }
 
diff --git a/swad_agenda.c b/swad_agenda.c
index de067fb7..a213d778 100644
--- a/swad_agenda.c
+++ b/swad_agenda.c
@@ -380,7 +380,7 @@ void Agd_ShowUsrAgenda (void)
 	}
 
    if (Error)
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -422,12 +422,12 @@ void Agd_ShowOtherAgendaAfterLogIn (void)
 	    Lay_EndRoundFrame ();
            }
 	 else
-	    Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+	    Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
        }
       else
 	 /* The current language is not my preferred language
 	    ==> change automatically to my language */
-         Lay_ShowAlert (Lay_INFO,Txt_Switching_to_LANGUAGE[Gbl.Usrs.Me.UsrDat.Prefs.Language]);
+         Ale_ShowAlert (Ale_INFO,Txt_Switching_to_LANGUAGE[Gbl.Usrs.Me.UsrDat.Prefs.Language]);
      }
   }
 
@@ -487,7 +487,7 @@ static void Agd_ShowEvents (Agd_AgendaType_t AgendaType)
       Lay_EndTable ();
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_No_events);
+      Ale_ShowAlert (Ale_INFO,Txt_No_events);
 
    /***** Write again links to pages *****/
    if (Pagination.MoreThanOnePage)
@@ -1301,7 +1301,7 @@ void Agd_AskRemEvent (void)
    Gbl.Agenda.AgdCodToEdit = AgdEvent.AgdCod;
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_event_X,
 	    AgdEvent.Event);
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            ActRemEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
 			   Lay_REMOVE_BUTTON,Txt_Remove_event);
 
@@ -1335,7 +1335,7 @@ void Agd_RemoveEvent (void)
 
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_removed,AgdEvent.Event);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show events again *****/
    Agd_ShowMyAgenda ();
@@ -1367,7 +1367,7 @@ void Agd_HideEvent (void)
 
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_is_now_hidden,AgdEvent.Event);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show events again *****/
    Agd_ShowMyAgenda ();
@@ -1400,7 +1400,7 @@ void Agd_UnhideEvent (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_is_now_visible,
             AgdEvent.Event);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show events again *****/
    Agd_ShowMyAgenda ();
@@ -1432,7 +1432,7 @@ void Agd_MakeEventPrivate (void)
 
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_is_now_private,AgdEvent.Event);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show events again *****/
    Agd_ShowMyAgenda ();
@@ -1465,7 +1465,7 @@ void Agd_MakeEventPublic (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_is_now_visible_to_users_of_your_courses,
             AgdEvent.Event);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show events again *****/
    Agd_ShowMyAgenda ();
@@ -1644,14 +1644,14 @@ void Agd_RecFormEvent (void)
    if (!AgdEvent.Location[0])	// If there is no event
      {
       NewEventIsCorrect = false;
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_title_of_the_event);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_title_of_the_event);
      }
 
    /***** Check if event is correct *****/
    if (!AgdEvent.Event[0])	// If there is no event
      {
       NewEventIsCorrect = false;
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_title_of_the_event);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_title_of_the_event);
      }
 
    /***** Create a new event or update an existing one *****/
@@ -1663,14 +1663,14 @@ void Agd_RecFormEvent (void)
 
 	 /***** Write success message *****/
 	 sprintf (Gbl.Alert.Txt,Txt_Created_new_event_X,AgdEvent.Event);
-	 Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	}
       else
         {
 	 Agd_UpdateEvent (&AgdEvent,Txt);
 
 	 /***** Write success message *****/
-	 Lay_ShowAlert (Lay_SUCCESS,Txt_The_event_has_been_modified);
+	 Ale_ShowAlert (Ale_SUCCESS,Txt_The_event_has_been_modified);
         }
 
       /* Free memory for list of selected groups */
diff --git a/swad_announcement.c b/swad_announcement.c
index 2070768c..d8357bb0 100644
--- a/swad_announcement.c
+++ b/swad_announcement.c
@@ -125,7 +125,7 @@ void Ann_ShowAllAnnouncements (void)
 		        Hlp_MESSAGES_Announcements);
 
    if (!NumAnnouncements)
-      Lay_ShowAlert (Lay_INFO,Txt_No_announcements);
+      Ale_ShowAlert (Ale_INFO,Txt_No_announcements);
 
    /***** Show the announcements *****/
    for (NumAnn = 0;
@@ -493,7 +493,7 @@ void Ann_ReceiveAnnouncement (void)
    Ann_CreateAnnouncement (Roles,Subject,Content);
 
    /***** Write message of success *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Announcement_created);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Announcement_created);
 
    /***** Refresh list of announcements *****/
    Ann_ShowAllAnnouncements ();
@@ -578,7 +578,7 @@ void Ann_RemoveAnnouncement (void)
    DB_QueryDELETE (Query,"can not remove announcement");
 
    /***** Write message of success *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Announcement_removed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Announcement_removed);
 
    /***** Refresh list of announcements *****/
    Ann_ShowAllAnnouncements ();
diff --git a/swad_assignment.c b/swad_assignment.c
index 276b5dc5..580a115d 100644
--- a/swad_assignment.c
+++ b/swad_assignment.c
@@ -159,7 +159,7 @@ static void Asg_ShowAllAssignments (void)
       Lay_EndTable ();
      }
    else	// No assignments created
-      Lay_ShowAlert (Lay_INFO,Txt_No_assignments);
+      Ale_ShowAlert (Ale_INFO,Txt_No_assignments);
 
    /***** Button to create a new assignment *****/
    if (Asg_CheckIfICanCreateAssignments ())
@@ -972,7 +972,7 @@ void Asg_ReqRemAssignment (void)
    Gbl.Asgs.AsgCodToEdit = Asg.AsgCod;
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_assignment_X,
             Asg.Title);
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            ActRemAsg,NULL,Asg_PutParams,
                            Lay_REMOVE_BUTTON,Txt_Remove_assignment);
 
@@ -1016,7 +1016,7 @@ void Asg_RemoveAssignment (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Assignment_X_removed,
             Asg.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show assignments again *****/
    Asg_SeeAssignments ();
@@ -1048,7 +1048,7 @@ void Asg_HideAssignment (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Assignment_X_is_now_hidden,
             Asg.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show assignments again *****/
    Asg_SeeAssignments ();
@@ -1080,7 +1080,7 @@ void Asg_ShowAssignment (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Assignment_X_is_now_visible,
             Asg.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show assignments again *****/
    Asg_SeeAssignments ();
@@ -1361,7 +1361,7 @@ void Asg_RecFormAssignment (void)
          NewAssignmentIsCorrect = false;
          sprintf (Gbl.Alert.Txt,Txt_Already_existed_an_assignment_with_the_title_X,
                   NewAsg.Title);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else	// Title is correct
         {
@@ -1374,13 +1374,13 @@ void Asg_RecFormAssignment (void)
                   NewAssignmentIsCorrect = false;
                   sprintf (Gbl.Alert.Txt,Txt_Already_existed_an_assignment_with_the_folder_X,
                            NewAsg.Folder);
-                  Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+                  Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
                  }
               }
             else	// Folder name not valid
               {
                NewAssignmentIsCorrect = false;
-               Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+               Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
               }
            }
          else	// NewAsg.SendWork == Asg_DO_NOT_SEND_WORK
@@ -1390,7 +1390,7 @@ void Asg_RecFormAssignment (void)
                if (Brw_CheckIfExistsFolderAssigmentForAnyUsr (OldAsg.Folder))
                  {
                   NewAssignmentIsCorrect = false;
-                  Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_disable_file_uploading_once_folders_have_been_created);
+                  Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_disable_file_uploading_once_folders_have_been_created);
                  }
               }
            }
@@ -1399,7 +1399,7 @@ void Asg_RecFormAssignment (void)
    else	// If there is not an assignment title
      {
       NewAssignmentIsCorrect = false;
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_title_of_the_assignment);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_title_of_the_assignment);
      }
 
    /***** Create a new assignment or update an existing one *****/
@@ -1414,7 +1414,7 @@ void Asg_RecFormAssignment (void)
 
 	 /***** Write success message *****/
 	 sprintf (Gbl.Alert.Txt,Txt_Created_new_assignment_X,NewAsg.Title);
-	 Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	}
       else
         {
@@ -1426,7 +1426,7 @@ void Asg_RecFormAssignment (void)
             Asg_UpdateAssignment (&NewAsg,Txt);
 
 	    /***** Write success message *****/
-	    Lay_ShowAlert (Lay_SUCCESS,Txt_The_assignment_has_been_modified);
+	    Ale_ShowAlert (Ale_SUCCESS,Txt_The_assignment_has_been_modified);
            }
         }
 
diff --git a/swad_attendance.c b/swad_attendance.c
index e1c446dd..77ef4377 100644
--- a/swad_attendance.c
+++ b/swad_attendance.c
@@ -273,7 +273,7 @@ static void Att_ShowAllAttEvents (void)
       Lay_EndTable ();
      }
    else	// No events created
-      Lay_ShowAlert (Lay_INFO,Txt_No_events);
+      Ale_ShowAlert (Ale_INFO,Txt_No_events);
 
    /***** Button to create a new attendance event *****/
    if (ICanEdit)
@@ -879,7 +879,7 @@ void Att_AskRemAttEvent (void)
    /***** Ask for confirmation of removing *****/
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_event_X,
             Att.Title);
-   Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
    Lay_PutRemoveButton (Txt_Remove_event);
    Act_FormEnd ();
 
@@ -909,7 +909,7 @@ void Att_GetAndRemAttEvent (void)
 
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_removed,Att.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show attendance events again *****/
    Att_SeeAttEvents ();
@@ -957,7 +957,7 @@ void Att_HideAttEvent (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_is_now_hidden,
             Att.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show attendance events again *****/
    Att_SeeAttEvents ();
@@ -989,7 +989,7 @@ void Att_ShowAttEvent (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Event_X_is_now_visible,
             Att.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show attendance events again *****/
    Att_SeeAttEvents ();
@@ -1270,13 +1270,13 @@ void Att_RecFormAttEvent (void)
          ReceivedAttEventIsCorrect = false;
          sprintf (Gbl.Alert.Txt,Txt_Already_existed_an_event_with_the_title_X,
                   ReceivedAtt.Title);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
      }
    else	// If there is not an attendance event title
      {
       ReceivedAttEventIsCorrect = false;
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_title_of_the_event);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_title_of_the_event);
      }
 
    /***** Create a new attendance event or update an existing one *****/
@@ -1292,14 +1292,14 @@ void Att_RecFormAttEvent (void)
 
          /***** Write success message *****/
 	 sprintf (Gbl.Alert.Txt,Txt_Created_new_event_X,ReceivedAtt.Title);
-	 Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	}
       else
 	{
          Att_UpdateAttEvent (&ReceivedAtt,Txt);
 
 	 /***** Write success message *****/
-	 Lay_ShowAlert (Lay_SUCCESS,Txt_The_event_has_been_modified);
+	 Ale_ShowAlert (Ale_SUCCESS,Txt_The_event_has_been_modified);
 	}
 
       /* Free memory for list of selected groups */
@@ -2207,7 +2207,7 @@ void Att_RegisterMeAsStdInAttEvent (void)
 	 Att_RemoveUsrFromAttEvent (Att.AttCod,Gbl.Usrs.Me.UsrDat.UsrCod);
 
       /***** Write final message *****/
-      Lay_ShowAlert (Lay_SUCCESS,Txt_Your_comment_has_been_updated);
+      Ale_ShowAlert (Ale_SUCCESS,Txt_Your_comment_has_been_updated);
      }
 
    /***** Show the attendance event again *****/
@@ -2334,7 +2334,7 @@ void Att_RegisterStudentsInAttEvent (void)
       sprintf (Format,"%s: %%u<br />%s: %%u",Txt_Presents,Txt_Absents);
       sprintf (Gbl.Alert.Txt,Format,
 	       NumStdsPresent,NumStdsAbsent);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
    else	// Gbl.Usrs.LstUsrs[Rol_STUDENT].NumUsrs == 0
       /***** Show warning indicating no students found *****/
@@ -2798,7 +2798,7 @@ static void Usr_ListOrPrintStdsAttendanceCrs (Att_TypeOfView_t TypeOfView)
      }
    else	// No students selected
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_students);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_students);
       Usr_ReqListStdsAttendanceCrs ();		// ...show again the form
      }
 
diff --git a/swad_banner.c b/swad_banner.c
index 56ff51ec..ebe92520 100644
--- a/swad_banner.c
+++ b/swad_banner.c
@@ -113,7 +113,7 @@ void Ban_SeeBanners (void)
    if (Gbl.Banners.Num)	// There are banners
       Ban_WriteListOfBanners ();
    else			// No banners created
-      Lay_ShowAlert (Lay_INFO,Txt_No_banners);
+      Ale_ShowAlert (Ale_INFO,Txt_No_banners);
 
    /***** Button to create banner *****/
    if (Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM)
@@ -485,7 +485,7 @@ void Ban_RemoveBanner (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Banner_X_removed,
             Ban.ShrtName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show the form again *****/
    Ban_EditBanners ();
@@ -544,7 +544,7 @@ static void Ban_ShowOrHideBanner (bool Hide)
    sprintf (Gbl.Alert.Txt,Hide ? Txt_The_banner_X_is_now_hidden :
 	                       Txt_The_banner_X_is_now_visible,
 	    Ban.ShrtName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show the form again *****/
    Ban_EditBanners ();
@@ -618,7 +618,7 @@ static void Ban_RenameBanner (Cns_ShrtOrFullName_t ShrtOrFullName)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_banner_X_empty,
                CurrentBanName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -630,7 +630,7 @@ static void Ban_RenameBanner (Cns_ShrtOrFullName_t ShrtOrFullName)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_banner_X_already_exists,
                      NewBanName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -640,14 +640,14 @@ static void Ban_RenameBanner (Cns_ShrtOrFullName_t ShrtOrFullName)
             /* Write message to show the change made */
             sprintf (Gbl.Alert.Txt,Txt_The_banner_X_has_been_renamed_as_Y,
                      CurrentBanName,NewBanName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_banner_X_has_not_changed,
                   CurrentBanName);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -719,10 +719,10 @@ void Ban_ChangeBannerImg (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_image_is_X,
                NewImg);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-     Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_image_empty);
+     Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_image_empty);
 
    /***** Show the form again *****/
    Str_Copy (Ban->Img,NewImg,
@@ -764,10 +764,10 @@ void Ban_ChangeBannerWWW (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,
                NewWWW);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-     Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+     Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Str_Copy (Ban->WWW,NewWWW,
@@ -910,23 +910,23 @@ void Ban_RecFormNewBanner (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_banner_X_already_exists,
                   Ban->ShrtName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else if (Ban_CheckIfBannerNameExists ("FullName",Ban->FullName,-1L))
         {
          sprintf (Gbl.Alert.Txt,Txt_The_banner_X_already_exists,
                   Ban->FullName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else if (!Ban->Img[0])
-         Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_image_of_the_new_banner);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_image_of_the_new_banner);
       else if (!Ban->WWW[0])
-         Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_URL_of_the_new_banner);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_URL_of_the_new_banner);
       else	// Add new banner to database
          Ban_CreateBanner (Ban);
      }
    else	// If there is not a banner name
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_banner);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_banner);
 
    /***** Show the form again *****/
    Ban_EditBanners ();
@@ -952,7 +952,7 @@ static void Ban_CreateBanner (struct Banner *Ban)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_banner_X,
             Ban->ShrtName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
diff --git a/swad_centre.c b/swad_centre.c
index 9869dc07..decdc549 100644
--- a/swad_centre.c
+++ b/swad_centre.c
@@ -214,7 +214,7 @@ void Ctr_SeeCtrWithPendingDegs (void)
       Lay_EndRoundFrameTable ();
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_There_are_no_centres_with_requests_for_degrees_to_be_confirmed);
+      Ale_ShowAlert (Ale_INFO,Txt_There_are_no_centres_with_requests_for_degrees_to_be_confirmed);
 
    /***** Free structure that stores the query result *****/
    DB_FreeMySQLResult (&mysql_res);
@@ -772,7 +772,7 @@ static void Ctr_ListCentres (void)
       Lay_EndTable ();
      }
    else	// No centres created in the current institution
-      Lay_ShowAlert (Lay_INFO,Txt_No_centres);
+      Ale_ShowAlert (Ale_INFO,Txt_No_centres);
 
    /***** Button to create centre *****/
    if (Ctr_CheckIfICanCreateCentres ())
@@ -1717,7 +1717,7 @@ void Ctr_RemoveCentre (void)
    if (Ctr.Degs.Num ||
        Ctr.NumUsrsWhoClaimToBelongToCtr ||
        Ctr.NumUsrs)	// Centre has degrees or users ==> don't remove
-      Lay_ShowAlert (Lay_WARNING,Txt_To_remove_a_centre_you_must_first_remove_all_degrees_and_teachers_in_the_centre);
+      Ale_ShowAlert (Ale_WARNING,Txt_To_remove_a_centre_you_must_first_remove_all_degrees_and_teachers_in_the_centre);
    else	// Centre has no teachers ==> remove it
      {
       /***** Remove all the threads and posts in forums of the centre *****/
@@ -1744,7 +1744,7 @@ void Ctr_RemoveCentre (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_Centre_X_removed,
                Ctr.FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1776,7 +1776,7 @@ void Ctr_ChangeCtrInsInConfig (void)
                                          Gbl.CurrentCtr.Ctr.CtrCod,
                                          NewIns.InsCod))
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_centre_X_already_exists,
 		  Gbl.CurrentCtr.Ctr.ShrtName);
 	}
@@ -1785,7 +1785,7 @@ void Ctr_ChangeCtrInsInConfig (void)
                                               Gbl.CurrentCtr.Ctr.CtrCod,
                                               NewIns.InsCod))
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_centre_X_already_exists,
 		  Gbl.CurrentCtr.Ctr.FullName);
 	}
@@ -1800,7 +1800,7 @@ void Ctr_ChangeCtrInsInConfig (void)
 	 Hie_InitHierarchy ();
 
 	 /***** Write message to show the change made *****/
-         Gbl.Alert.Type = Lay_SUCCESS;
+         Gbl.Alert.Type = Ale_SUCCESS;
          sprintf (Gbl.Alert.Txt,Txt_The_centre_X_has_been_moved_to_the_institution_Y,
 		  Gbl.CurrentCtr.Ctr.FullName,NewIns.FullName);
 	}
@@ -1814,7 +1814,7 @@ void Ctr_ChangeCtrInsInConfig (void)
 void Ctr_ContEditAfterChgCtrInConfig (void)
   {
    /***** Write error/success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Ctr_ShowConfiguration ();
@@ -1862,7 +1862,7 @@ void Ctr_ChangeCentrePlace (void)
 
    /***** Write message to show the change made
           and put button to go to centre changed *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,"%s",Txt_The_place_of_the_centre_has_changed);
    Ctr_ShowAlertAndButtonToGoToCtr ();
 
@@ -1942,7 +1942,7 @@ static void Ctr_RenameCentre (struct Centre *Ctr,Cns_ShrtOrFullName_t ShrtOrFull
    /***** Check if new name is empty *****/
    if (!NewCtrName[0])
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_centre_X_empty,
                CurrentCtrName);
      }
@@ -1954,7 +1954,7 @@ static void Ctr_RenameCentre (struct Centre *Ctr,Cns_ShrtOrFullName_t ShrtOrFull
          /***** If degree was in database... *****/
          if (Ctr_CheckIfCtrNameExistsInIns (ParamName,NewCtrName,Ctr->CtrCod,Gbl.CurrentIns.Ins.InsCod))
            {
-            Gbl.Alert.Type = Lay_WARNING;
+            Gbl.Alert.Type = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_centre_X_already_exists,NewCtrName);
            }
          else
@@ -1963,7 +1963,7 @@ static void Ctr_RenameCentre (struct Centre *Ctr,Cns_ShrtOrFullName_t ShrtOrFull
             Ctr_UpdateInsNameDB (Ctr->CtrCod,FieldName,NewCtrName);
 
             /* Write message to show the change made */
-            Gbl.Alert.Type = Lay_SUCCESS;
+            Gbl.Alert.Type = Ale_SUCCESS;
             sprintf (Gbl.Alert.Txt,Txt_The_centre_X_has_been_renamed_as_Y,
                      CurrentCtrName,NewCtrName);
 
@@ -1974,7 +1974,7 @@ static void Ctr_RenameCentre (struct Centre *Ctr,Cns_ShrtOrFullName_t ShrtOrFull
         }
       else	// The same name
 	{
-         Gbl.Alert.Type = Lay_INFO;
+         Gbl.Alert.Type = Ale_INFO;
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_centre_X_has_not_changed,
                   CurrentCtrName);
 	}
@@ -2040,12 +2040,12 @@ void Ctr_ChangeCtrWWW (void)
 
       /***** Write message to show the change made
 	     and put button to go to centre changed *****/
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,NewWWW);
       Ctr_ShowAlertAndButtonToGoToCtr ();
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Ctr_EditCentres ();
@@ -2071,10 +2071,10 @@ void Ctr_ChangeCtrWWWInConfig (void)
 
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,NewWWW);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Ctr_ShowConfiguration ();
@@ -2132,7 +2132,7 @@ void Ctr_ChangeCtrStatus (void)
 
    /***** Write message to show the change made
 	  and put button to go to centre changed *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_The_status_of_the_centre_X_has_changed,
             Gbl.Ctrs.EditingCtr.ShrtName);
    Ctr_ShowAlertAndButtonToGoToCtr ();
@@ -2171,13 +2171,13 @@ static void Ctr_ShowAlertAndButtonToGoToCtr (void)
      {
       /***** Alert with button to go to centre *****/
       sprintf (Gbl.Title,Txt_Go_to_X,Gbl.Ctrs.EditingCtr.ShrtName);
-      Lay_ShowAlertAndButton (Gbl.Alert.Type,Gbl.Alert.Txt,
+      Ale_ShowAlertAndButton (Gbl.Alert.Type,Gbl.Alert.Txt,
                               ActSeeDeg,NULL,Ctr_PutParamGoToCtr,
                               Lay_CONFIRM_BUTTON,Gbl.Title);
      }
    else
       /***** Alert *****/
-      Lay_ShowAlert (Gbl.Alert.Type,Gbl.Alert.Txt);
+      Ale_ShowAlert (Gbl.Alert.Type,Gbl.Alert.Txt);
   }
 
 static void Ctr_PutParamGoToCtr (void)
@@ -2240,7 +2240,7 @@ void Ctr_RequestPhoto (void)
             Ctr_PHOTO_SAVED_MAX_WIDTH,
             Ctr_PHOTO_SAVED_MAX_HEIGHT,
             Txt_XxY_pixels_or_higher);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Upload photo *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">"
@@ -2292,7 +2292,7 @@ void Ctr_ReceivePhoto (void)
 	       WrongType = true;
    if (WrongType)
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_Wrong_file_type);
+      Ale_ShowAlert (Ale_WARNING,Txt_Wrong_file_type);
       return;
      }
 
@@ -2310,14 +2310,14 @@ void Ctr_ReceivePhoto (void)
    /* Get filename extension */
    if ((PtrExtension = strrchr (FileNameImgSrc,(int) '.')) == NULL)
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_Wrong_file_type);
+      Ale_ShowAlert (Ale_WARNING,Txt_Wrong_file_type);
       return;
      }
    LengthExtension = strlen (PtrExtension);
    if (LengthExtension < Fil_MIN_BYTES_FILE_EXTENSION ||
        LengthExtension > Fil_MAX_BYTES_FILE_EXTENSION)
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_Wrong_file_type);
+      Ale_ShowAlert (Ale_WARNING,Txt_Wrong_file_type);
       return;
      }
 
@@ -2327,7 +2327,7 @@ void Ctr_ReceivePhoto (void)
             Gbl.UniqueNameEncrypted,PtrExtension);
    if (!Fil_EndReceptionOfFile (FileNameImgTmp,Param))
      {
-      Lay_ShowAlert (Lay_WARNING,"Error copying file.");
+      Ale_ShowAlert (Ale_WARNING,"Error copying file.");
       return;
      }
 
@@ -2675,7 +2675,7 @@ static void Ctr_RecFormRequestOrCreateCtr (unsigned Status)
 
    /* Get place */
    if ((Gbl.Ctrs.EditingCtr.PlcCod = Plc_GetParamPlcCod ()) < 0)	// 0 is reserved for "other place"
-      Lay_ShowAlert (Lay_ERROR,"Wrong place.");
+      Ale_ShowAlert (Ale_ERROR,"Wrong place.");
 
    /* Get centre short name */
    Par_GetParToText ("ShortName",Gbl.Ctrs.EditingCtr.ShrtName,Hie_MAX_BYTES_SHRT_NAME);
@@ -2696,13 +2696,13 @@ static void Ctr_RecFormRequestOrCreateCtr (unsigned Status)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_centre_X_already_exists,
                      Gbl.Ctrs.EditingCtr.ShrtName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else if (Ctr_CheckIfCtrNameExistsInIns ("FullName",Gbl.Ctrs.EditingCtr.FullName,-1L,Gbl.CurrentIns.Ins.InsCod))
            {
             sprintf (Gbl.Alert.Txt,Txt_The_centre_X_already_exists,
                      Gbl.Ctrs.EditingCtr.FullName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else	// Add new centre to database
             Ctr_CreateCentre (Status);
@@ -2710,13 +2710,13 @@ static void Ctr_RecFormRequestOrCreateCtr (unsigned Status)
       else	// If there is not a web
         {
          sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_web_address_of_the_new_centre);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
      }
    else	// If there is not a centre name
      {
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_centre);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -2754,7 +2754,7 @@ static void Ctr_CreateCentre (unsigned Status)
 
    /***** Write message to show the change made
 	  and put button to go to centre created *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_Created_new_centre_X,
             Gbl.Ctrs.EditingCtr.FullName);
    Ctr_ShowAlertAndButtonToGoToCtr ();
diff --git a/swad_changelog.h b/swad_changelog.h
index bc8bd518..e6b2a815 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -235,13 +235,14 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.214 (2017-05-10)"
+#define Log_PLATFORM_VERSION	"SWAD 16.215 (2017-05-10)"
 #define CSS_FILE		"swad16.209.3.css"
 #define JS_FILE			"swad16.206.3.js"
 
 // Number of lines (includes comments but not blank lines) has been got with the following command:
 // nl swad*.c swad*.h css/swad*.css py/swad*.py js/swad*.js soap/swad*?.h sql/swad*.sql | tail -1
 /*
+        Version 16.215:   May 11, 2017	New module swad_alert for alerts. (218944 lines)
         Version 16.214:   May 11, 2017	Changes in edition of institutions.
 					Code refactoring related to alerts. (218867 lines)
         Version 16.213:   May 11, 2017	Changes in edition of centres. (218881 lines)
diff --git a/swad_chat.c b/swad_chat.c
index 847964e5..f4b53abc 100644
--- a/swad_chat.c
+++ b/swad_chat.c
@@ -82,12 +82,12 @@ void Cht_ShowChatRooms (void)
    sprintf (Gbl.Alert.Txt,Txt_To_use_chat_you_must_have_installed_the_software_X_and_add_Y_,
             Cfg_JAVA_URL,Cfg_JAVA_NAME,
             Cfg_PLATFORM_SERVER);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** List available chat rooms *****/
    Cht_ShowListOfAvailableChatRooms ();
 
-   Lay_ShowAlert (Lay_WARNING,Txt_Unfortunately_Firefox_and_Chrome_no_longer_allow_Java_to_run_);
+   Ale_ShowAlert (Ale_WARNING,Txt_Unfortunately_Firefox_and_Chrome_no_longer_allow_Java_to_run_);
 
    if (Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM)
       Cht_ShowListOfChatRoomsWithUsrs ();
diff --git a/swad_country.c b/swad_country.c
index 7cd53122..29641780 100644
--- a/swad_country.c
+++ b/swad_country.c
@@ -187,7 +187,7 @@ void Cty_SeeCtyWithPendingInss (void)
       Lay_EndRoundFrameTable ();
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_There_are_no_countries_with_requests_for_institutions_to_be_confirmed);
+      Ale_ShowAlert (Ale_INFO,Txt_There_are_no_countries_with_requests_for_institutions_to_be_confirmed);
 
    /***** Free structure that stores the query result *****/
    DB_FreeMySQLResult (&mysql_res);
@@ -1695,7 +1695,7 @@ void Cty_RemoveCountry (void)
    if (Cty.NumInss ||
        Cty.NumUsrsWhoClaimToBelongToCty ||
        Cty.NumUsrs)	// Country has institutions or users ==> don't remove
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_remove_a_country_with_institutions_or_users);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_remove_a_country_with_institutions_or_users);
    else	// Country has no users ==> remove it
      {
       /***** Remove surveys of the country *****/
@@ -1709,7 +1709,7 @@ void Cty_RemoveCountry (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_Country_X_removed,
                Cty.Name[Gbl.Prefs.Language]);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1752,7 +1752,7 @@ void Cty_RenameCountry (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_country_X_empty,
                Cty->Name[Language]);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -1764,7 +1764,7 @@ void Cty_RenameCountry (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_country_X_already_exists,
                      NewCtyName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -1775,14 +1775,14 @@ void Cty_RenameCountry (void)
             /* Write message to show the change made */
             sprintf (Gbl.Alert.Txt,Txt_The_country_X_has_been_renamed_as_Y,
                      Cty->Name[Language],NewCtyName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_country_X_has_not_changed,
                   Cty->Name[Language]);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -1886,7 +1886,7 @@ void Cty_ChangeCtyWWW (void)
 
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,NewWWW);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show the form again *****/
    Str_Copy (Cty->WWW[Language],NewWWW,
@@ -2091,14 +2091,14 @@ void Cty_RecFormNewCountry (void)
    /* Get numeric country code */
    if ((Cty->CtyCod = Cty_GetParamOtherCtyCod ()) < 0)
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_numerical_code_of_the_new_country);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_numerical_code_of_the_new_country);
       CreateCountry = false;
      }
    else if (Cty_CheckIfNumericCountryCodeExists (Cty->CtyCod))
      {
       sprintf (Gbl.Alert.Txt,Txt_The_numerical_code_X_already_exists,
                Cty->CtyCod);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
       CreateCountry = false;
      }
    else	// Numeric code correct
@@ -2114,7 +2114,7 @@ void Cty_RecFormNewCountry (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_alphabetical_code_X_is_not_correct,
                      Cty->Alpha2);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
             CreateCountry = false;
            }
       if (CreateCountry)
@@ -2123,7 +2123,7 @@ void Cty_RecFormNewCountry (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_alphabetical_code_X_already_exists,
                      Cty->Alpha2);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
             CreateCountry = false;
            }
          else	// Alphabetic code correct
@@ -2143,14 +2143,14 @@ void Cty_RecFormNewCountry (void)
                     {
                      sprintf (Gbl.Alert.Txt,Txt_The_country_X_already_exists,
                               Cty->Name[Lan]);
-                     Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+                     Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
                      CreateCountry = false;
                      break;
                     }
                  }
                else	// If there is not a country name
                  {
-                  Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_name_of_the_new_country_in_all_languages);
+                  Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_name_of_the_new_country_in_all_languages);
                   CreateCountry = false;
                   break;
                  }
@@ -2234,7 +2234,7 @@ static void Cty_CreateCountry (struct Country *Cty)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_country_X,
             Cty->Name);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
diff --git a/swad_course.c b/swad_course.c
index 74c79b79..1623d4ae 100644
--- a/swad_course.c
+++ b/swad_course.c
@@ -1146,7 +1146,7 @@ static void Crs_ListCourses (void)
       Lay_EndTable ();
      }
    else	// No courses created in the current degree
-      Lay_ShowAlert (Lay_INFO,Txt_No_courses);
+      Ale_ShowAlert (Ale_INFO,Txt_No_courses);
 
    /***** Button to create course *****/
    if (Crs_CheckIfICanCreateCourses ())
@@ -1845,14 +1845,14 @@ static void Crs_RecFormRequestOrCreateCrs (unsigned Status)
 	 if (Crs_CheckIfCrsNameExistsInYearOfDeg ("ShortName",Gbl.Degs.EditingCrs.ShrtName,-1L,
 	                                          Gbl.Degs.EditingCrs.DegCod,Gbl.Degs.EditingCrs.Year))
 	   {
-            Gbl.Alert.Type = Lay_WARNING;
+            Gbl.Alert.Type = Ale_WARNING;
 	    sprintf (Gbl.Alert.Txt,Txt_The_course_X_already_exists,
 	             Gbl.Degs.EditingCrs.ShrtName);
 	   }
 	 else if (Crs_CheckIfCrsNameExistsInYearOfDeg ("FullName",Gbl.Degs.EditingCrs.FullName,-1L,
 	                                               Gbl.Degs.EditingCrs.DegCod,Gbl.Degs.EditingCrs.Year))
 	   {
-            Gbl.Alert.Type = Lay_WARNING;
+            Gbl.Alert.Type = Ale_WARNING;
 	    sprintf (Gbl.Alert.Txt,Txt_The_course_X_already_exists,
 		     Gbl.Degs.EditingCrs.FullName);
 	   }
@@ -1861,13 +1861,13 @@ static void Crs_RecFormRequestOrCreateCrs (unsigned Status)
 	}
       else	// If there is not a course name
 	{
-         Gbl.Alert.Type = Lay_WARNING;
+         Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_course);
 	}
      }
    else	// Year not valid
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_The_year_X_is_not_allowed,
                Gbl.Degs.EditingCrs.Year);
      }
@@ -1921,7 +1921,7 @@ static void Crs_CreateCourse (unsigned Status)
    Gbl.Degs.EditingCrs.CrsCod = DB_QueryINSERTandReturnCode (Query,"can not create a new course");
 
    /***** Create success message *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_Created_new_course_X,
             Gbl.Degs.EditingCrs.FullName);
   }
@@ -1947,7 +1947,7 @@ void Crs_RemoveCourse (void)
      {
       /***** Check if this course has users *****/
       if (Crs.NumUsrs)	// Course has users ==> don't remove
-         Lay_ShowAlert (Lay_WARNING,Txt_To_remove_a_course_you_must_first_remove_all_users_in_the_course);
+         Ale_ShowAlert (Ale_WARNING,Txt_To_remove_a_course_you_must_first_remove_all_users_in_the_course);
       else		// Course has no users ==> remove it
         {
          /***** Remove course *****/
@@ -1956,11 +1956,11 @@ void Crs_RemoveCourse (void)
          /***** Write message to show the change made *****/
          sprintf (Gbl.Alert.Txt,Txt_Course_X_removed,
                   Crs.FullName);
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
         }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_dont_have_permission_to_edit_this_course);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_dont_have_permission_to_edit_this_course);
 
    /***** Show the form again *****/
    Crs_EditCourses ();
@@ -2299,20 +2299,20 @@ void Crs_ChangeInsCrsCod (void)
       if (strcmp (NewInstitutionalCrsCod,Gbl.Degs.EditingCrs.InstitutionalCrsCod))
         {
          Crs_UpdateInstitutionalCrsCod (&Gbl.Degs.EditingCrs,NewInstitutionalCrsCod);
-         Gbl.Alert.Type = Lay_SUCCESS;
+         Gbl.Alert.Type = Ale_SUCCESS;
          sprintf (Gbl.Alert.Txt,Txt_The_institutional_code_of_the_course_X_has_changed_to_Y,
                   Gbl.Degs.EditingCrs.ShrtName,NewInstitutionalCrsCod);
         }
       else	// The same institutional code
 	{
-	 Gbl.Alert.Type = Lay_INFO;
+	 Gbl.Alert.Type = Ale_INFO;
          sprintf (Gbl.Alert.Txt,Txt_The_institutional_code_of_the_course_X_has_not_changed,
                   Gbl.Degs.EditingCrs.ShrtName);
 	}
      }
    else
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_dont_have_permission_to_edit_this_course);
      }
   }
@@ -2341,14 +2341,14 @@ void Crs_ChangeCrsDegInConfig (void)
       if (Crs_CheckIfCrsNameExistsInYearOfDeg ("ShortName",Gbl.CurrentCrs.Crs.ShrtName,-1L,
                                                NewDeg.DegCod,Gbl.CurrentCrs.Crs.Year))
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_In_the_year_X_of_the_degree_Y_already_existed_a_course_with_the_name_Z,
 		  Txt_YEAR_OF_DEGREE[Gbl.CurrentCrs.Crs.Year],NewDeg.FullName,Gbl.CurrentCrs.Crs.ShrtName);
 	}
       else if (Crs_CheckIfCrsNameExistsInYearOfDeg ("FullName",Gbl.CurrentCrs.Crs.FullName,-1L,
                                                     NewDeg.DegCod,Gbl.CurrentCrs.Crs.Year))
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_In_the_year_X_of_the_degree_Y_already_existed_a_course_with_the_name_Z,
 		  Txt_YEAR_OF_DEGREE[Gbl.CurrentCrs.Crs.Year],NewDeg.FullName,Gbl.CurrentCrs.Crs.FullName);
 	}
@@ -2363,7 +2363,7 @@ void Crs_ChangeCrsDegInConfig (void)
       	 Hie_InitHierarchy ();
 
 	 /***** Create message to show the change made *****/
-	 Gbl.Alert.Type = Lay_SUCCESS;
+	 Gbl.Alert.Type = Ale_SUCCESS;
 	 sprintf (Gbl.Alert.Txt,Txt_The_course_X_has_been_moved_to_the_degree_Y,
 		  Gbl.CurrentCrs.Crs.FullName,
 		  Gbl.CurrentDeg.Deg.FullName);
@@ -2378,7 +2378,7 @@ void Crs_ChangeCrsDegInConfig (void)
 void Crs_ContEditAfterChgCrsInConfig (void)
   {
    /***** Write error/success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Crs_ShowIntroduction ();
@@ -2421,14 +2421,14 @@ void Crs_ChangeCrsYearInConfig (void)
       if (Crs_CheckIfCrsNameExistsInYearOfDeg ("ShortName",Gbl.CurrentCrs.Crs.ShrtName,-1L,
                                                Gbl.CurrentCrs.Crs.DegCod,NewYear))
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_course_X_already_exists_in_year_Y,
 		  Gbl.CurrentCrs.Crs.ShrtName,Txt_YEAR_OF_DEGREE[NewYear]);
 	}
       else if (Crs_CheckIfCrsNameExistsInYearOfDeg ("FullName",Gbl.CurrentCrs.Crs.FullName,-1L,
                                                     Gbl.CurrentCrs.Crs.DegCod,NewYear))
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_course_X_already_exists_in_year_Y,
 		  Gbl.CurrentCrs.Crs.FullName,Txt_YEAR_OF_DEGREE[NewYear]);
 	}
@@ -2438,14 +2438,14 @@ void Crs_ChangeCrsYearInConfig (void)
          Crs_UpdateCrsYear (&Gbl.CurrentCrs.Crs,NewYear);
 
 	 /***** Create message to show the change made *****/
-	 Gbl.Alert.Type = Lay_SUCCESS;
+	 Gbl.Alert.Type = Ale_SUCCESS;
 	 sprintf (Gbl.Alert.Txt,Txt_The_year_of_the_course_X_has_changed,
 		  Gbl.CurrentCrs.Crs.ShrtName);
 	}
      }
    else	// Year not valid
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_The_year_X_is_not_allowed,NewYear);
      }
   }
@@ -2486,14 +2486,14 @@ void Crs_ChangeCrsYear (void)
          if (Crs_CheckIfCrsNameExistsInYearOfDeg ("ShortName",Gbl.Degs.EditingCrs.ShrtName,-1L,
                                                   Gbl.Degs.EditingCrs.DegCod,NewYear))
            {
-	    Gbl.Alert.Type = Lay_WARNING;
+	    Gbl.Alert.Type = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_course_X_already_exists_in_year_Y,
                      Gbl.Degs.EditingCrs.ShrtName,Txt_YEAR_OF_DEGREE[NewYear]);
            }
          else if (Crs_CheckIfCrsNameExistsInYearOfDeg ("FullName",Gbl.Degs.EditingCrs.FullName,-1L,
                                                        Gbl.Degs.EditingCrs.DegCod,NewYear))
            {
-	    Gbl.Alert.Type = Lay_WARNING;
+	    Gbl.Alert.Type = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_course_X_already_exists_in_year_Y,
                      Gbl.Degs.EditingCrs.FullName,Txt_YEAR_OF_DEGREE[NewYear]);
            }
@@ -2503,20 +2503,20 @@ void Crs_ChangeCrsYear (void)
             Crs_UpdateCrsYear (&Gbl.Degs.EditingCrs,NewYear);
 
             /***** Create message to show the change made *****/
-	    Gbl.Alert.Type = Lay_SUCCESS;
+	    Gbl.Alert.Type = Ale_SUCCESS;
             sprintf (Gbl.Alert.Txt,Txt_The_year_of_the_course_X_has_changed,
                      Gbl.Degs.EditingCrs.ShrtName);
            }
         }
       else	// Year not valid
         {
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
          sprintf (Gbl.Alert.Txt,Txt_The_year_X_is_not_allowed,NewYear);
         }
      }
    else
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_dont_have_permission_to_edit_this_course);
      }
   }
@@ -2631,7 +2631,7 @@ static void Crs_RenameCourse (struct Course *Crs,Cns_ShrtOrFullName_t ShrtOrFull
       /***** Check if new name is empty *****/
       if (!NewCrsName[0])
         {
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
          sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_course_X_empty,
                   CurrentCrsName);
         }
@@ -2644,7 +2644,7 @@ static void Crs_RenameCourse (struct Course *Crs,Cns_ShrtOrFullName_t ShrtOrFull
             if (Crs_CheckIfCrsNameExistsInYearOfDeg (ParamName,NewCrsName,Crs->CrsCod,
                                                      Crs->DegCod,Crs->Year))
               {
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
                sprintf (Gbl.Alert.Txt,Txt_The_course_X_already_exists,
                         NewCrsName);
               }
@@ -2654,7 +2654,7 @@ static void Crs_RenameCourse (struct Course *Crs,Cns_ShrtOrFullName_t ShrtOrFull
                Crs_UpdateCrsNameDB (Crs->CrsCod,FieldName,NewCrsName);
 
                /* Create message to show the change made */
-	       Gbl.Alert.Type = Lay_SUCCESS;
+	       Gbl.Alert.Type = Ale_SUCCESS;
                sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_course_X_has_changed_to_Y,
                         CurrentCrsName,NewCrsName);
 
@@ -2665,7 +2665,7 @@ static void Crs_RenameCourse (struct Course *Crs,Cns_ShrtOrFullName_t ShrtOrFull
            }
          else	// The same name
            {
-	    Gbl.Alert.Type = Lay_INFO;
+	    Gbl.Alert.Type = Ale_INFO;
             sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_course_X_has_not_changed,
                      CurrentCrsName);
            }
@@ -2673,7 +2673,7 @@ static void Crs_RenameCourse (struct Course *Crs,Cns_ShrtOrFullName_t ShrtOrFull
      }
    else
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_dont_have_permission_to_edit_this_course);
      }
   }
@@ -2758,9 +2758,9 @@ void Crs_ContEditAfterChgCrs (void)
    bool PutButtonToRequestRegistration;
 
    /***** Start alert *****/
-   Lay_ShowAlertAndButton1 (Gbl.Alert.Type,Gbl.Alert.Txt);
+   Ale_ShowAlertAndButton1 (Gbl.Alert.Type,Gbl.Alert.Txt);
 
-   if (Gbl.Alert.Type == Lay_SUCCESS)
+   if (Gbl.Alert.Type == Ale_SUCCESS)
      {
       /***** Put button to go to course changed *****/
       Crs_PutButtonToGoToCrs ();
@@ -2793,7 +2793,7 @@ void Crs_ContEditAfterChgCrs (void)
      }
 
    /***** End alert *****/
-   Lay_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
+   Ale_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
 
    /***** Show the form again *****/
    Crs_EditCourses ();
@@ -3366,7 +3366,7 @@ void Crs_RemoveOldCrss (void)
                NumCrss,
                MonthsWithoutAccess,
                Cfg_PLATFORM_SHORT_NAME);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
       /***** Remove courses *****/
       for (NumCrs = 0;
@@ -3386,5 +3386,5 @@ void Crs_RemoveOldCrss (void)
    /***** Write end message *****/
    sprintf (Gbl.Alert.Txt,Txt_X_courses_have_been_eliminated,
             NumCrssRemoved);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
diff --git a/swad_database.c b/swad_database.c
index 4d801079..0de9af6e 100644
--- a/swad_database.c
+++ b/swad_database.c
@@ -82,7 +82,7 @@ void DB_CreateTablesIfNotExist (void)
    extern const char *Txt_Created_tables_in_the_database_that_did_not_exist;
 
    /***** Information message *****/
-   Lay_ShowAlert (Lay_INFO,Txt_Creating_database_tables_if_they_do_not_exist);
+   Ale_ShowAlert (Ale_INFO,Txt_Creating_database_tables_if_they_do_not_exist);
    fprintf (Gbl.F.Out,"<ol>");
 
    /***** Table IP_prefs *****/
@@ -2847,7 +2847,7 @@ mysql> DESCRIBE ws_keys;
 
    /***** Show success message *****/
    fprintf (Gbl.F.Out,"</ol>");
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Created_tables_in_the_database_that_did_not_exist);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Created_tables_in_the_database_that_did_not_exist);
   }
 
 /*****************************************************************************/
diff --git a/swad_degree.c b/swad_degree.c
index b9fac91b..95a2dc7e 100644
--- a/swad_degree.c
+++ b/swad_degree.c
@@ -217,7 +217,7 @@ void Deg_SeeDegWithPendingCrss (void)
       Lay_EndRoundFrameTable ();
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_There_are_no_degrees_with_requests_for_courses_to_be_confirmed);
+      Ale_ShowAlert (Ale_INFO,Txt_There_are_no_degrees_with_requests_for_courses_to_be_confirmed);
 
    /***** Free structure that stores the query result *****/
    DB_FreeMySQLResult (&mysql_res);
@@ -1144,7 +1144,7 @@ static void Deg_CreateDegree (unsigned Status)
 
    /***** Write message to show the change made
           and put button to go to degree created *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_Created_new_degree_X,
             Gbl.Degs.EditingDeg.FullName);
    Deg_ShowAlertAndButtonToGoToDeg ();
@@ -1184,7 +1184,7 @@ static void Deg_ListDegrees (void)
       Lay_EndTable ();
      }
    else	// No degrees created in the current centre
-      Lay_ShowAlert (Lay_INFO,Txt_No_degrees);
+      Ale_ShowAlert (Ale_INFO,Txt_No_degrees);
 
    /***** Button to create degree *****/
    if (Deg_CheckIfICanCreateDegrees ())
@@ -1359,7 +1359,7 @@ void Deg_EditDegrees (void)
    else	// No degree types
      {
       /***** Warning message *****/
-      Lay_ShowAlert (Lay_WARNING,Txt_No_types_of_degree);
+      Ale_ShowAlert (Ale_WARNING,Txt_No_types_of_degree);
 
       /***** Form to create the first degree type *****/
       if (DT_CheckIfICanCreateDegreeTypes ())
@@ -1540,7 +1540,7 @@ static void Deg_RecFormRequestOrCreateDeg (unsigned Status)
 
    /* Get degree type */
    if ((Gbl.Degs.EditingDeg.DegTypCod = DT_GetParamOtherDegTypCod ()) <= 0)
-      Lay_ShowAlert (Lay_ERROR,"Wrong type of degree.");
+      Ale_ShowAlert (Ale_ERROR,"Wrong type of degree.");
 
    /* Get degree WWW */
    Par_GetParToText ("WWW",Gbl.Degs.EditingDeg.WWW,Cns_MAX_BYTES_WWW);
@@ -1555,13 +1555,13 @@ static void Deg_RecFormRequestOrCreateDeg (unsigned Status)
 	   {
 	    sprintf (Gbl.Alert.Txt,Txt_The_degree_X_already_exists,
 		     Gbl.Degs.EditingDeg.ShrtName);
-	    Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	    Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	   }
 	 else if (Deg_CheckIfDegNameExistsInCtr ("FullName",Gbl.Degs.EditingDeg.FullName,-1L,Gbl.Degs.EditingDeg.CtrCod))
 	   {
 	    sprintf (Gbl.Alert.Txt,Txt_The_degree_X_already_exists,
 		     Gbl.Degs.EditingDeg.FullName);
-	    Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	    Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	   }
 	 else	// Add new degree to database
 	    Deg_CreateDegree (Status);
@@ -1569,13 +1569,13 @@ static void Deg_RecFormRequestOrCreateDeg (unsigned Status)
       else	// If there is not a degree logo or web
 	{
 	 sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_web_address_of_the_new_degree);
-	 Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	}
      }
    else	// If there is not a degree name
      {
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_degree);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1600,7 +1600,7 @@ void Deg_RemoveDegree (void)
 
    /***** Check if this degree has courses *****/
    if (Crs_GetNumCrssInDeg (Deg.DegCod))	// Degree has courses ==> don't remove
-      Lay_ShowAlert (Lay_WARNING,Txt_To_remove_a_degree_you_must_first_remove_all_courses_in_the_degree);
+      Ale_ShowAlert (Ale_WARNING,Txt_To_remove_a_degree_you_must_first_remove_all_courses_in_the_degree);
    else	// Degree has no courses ==> remove it
      {
       /***** Remove degree *****/
@@ -1609,7 +1609,7 @@ void Deg_RemoveDegree (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_Degree_X_removed,
                Deg.FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1964,7 +1964,7 @@ static void Deg_RenameDegree (struct Degree *Deg,Cns_ShrtOrFullName_t ShrtOrFull
    /***** Check if new name is empty *****/
    if (!NewDegName[0])
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_degree_X_empty,
                CurrentDegName);
      }
@@ -1976,7 +1976,7 @@ static void Deg_RenameDegree (struct Degree *Deg,Cns_ShrtOrFullName_t ShrtOrFull
          /***** If degree was in database... *****/
          if (Deg_CheckIfDegNameExistsInCtr (ParamName,NewDegName,Deg->DegCod,Deg->CtrCod))
            {
-            Gbl.Alert.Type = Lay_WARNING;
+            Gbl.Alert.Type = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_degree_X_already_exists,NewDegName);
            }
          else
@@ -1985,7 +1985,7 @@ static void Deg_RenameDegree (struct Degree *Deg,Cns_ShrtOrFullName_t ShrtOrFull
             Deg_UpdateDegNameDB (Deg->DegCod,FieldName,NewDegName);
 
             /* Write message to show the change made */
-            Gbl.Alert.Type = Lay_SUCCESS;
+            Gbl.Alert.Type = Ale_SUCCESS;
             sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_degree_X_has_changed_to_Y,
                      CurrentDegName,NewDegName);
 
@@ -1996,7 +1996,7 @@ static void Deg_RenameDegree (struct Degree *Deg,Cns_ShrtOrFullName_t ShrtOrFull
         }
       else	// The same name
 	{
-         Gbl.Alert.Type = Lay_INFO;
+         Gbl.Alert.Type = Ale_INFO;
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_degree_X_has_not_changed,
                   CurrentDegName);
 	}
@@ -2054,13 +2054,13 @@ void Deg_ChangeDegCtrInConfig (void)
       /***** Check if it already exists a degree with the same name in the new centre *****/
       if (Deg_CheckIfDegNameExistsInCtr ("ShortName",Gbl.CurrentDeg.Deg.ShrtName,Gbl.CurrentDeg.Deg.DegCod,NewCtr.CtrCod))
 	{
-         Gbl.Alert.Type = Lay_WARNING;
+         Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_degree_X_already_exists,
 		  Gbl.CurrentDeg.Deg.ShrtName);
 	}
       else if (Deg_CheckIfDegNameExistsInCtr ("FullName",Gbl.CurrentDeg.Deg.FullName,Gbl.CurrentDeg.Deg.DegCod,NewCtr.CtrCod))
 	{
-         Gbl.Alert.Type = Lay_WARNING;
+         Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_degree_X_already_exists,
 		  Gbl.CurrentDeg.Deg.FullName);
 	}
@@ -2075,7 +2075,7 @@ void Deg_ChangeDegCtrInConfig (void)
 	 Hie_InitHierarchy ();
 
 	 /***** Create message to show the change made *****/
-         Gbl.Alert.Type = Lay_SUCCESS;
+         Gbl.Alert.Type = Ale_SUCCESS;
 	 sprintf (Gbl.Alert.Txt,Txt_The_degree_X_has_been_moved_to_the_centre_Y,
 		  Gbl.CurrentDeg.Deg.FullName,
 		  Gbl.CurrentCtr.Ctr.FullName);
@@ -2090,7 +2090,7 @@ void Deg_ChangeDegCtrInConfig (void)
 void Deg_ContEditAfterChgDegInConfig (void)
   {
    /***** Write success / warning message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Deg_ShowConfiguration ();
@@ -2140,12 +2140,12 @@ void Deg_ChangeDegWWW (void)
 
       /***** Write message to show the change made
 	     and put button to go to degree changed *****/
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,NewWWW);
       Deg_ShowAlertAndButtonToGoToDeg ();
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Deg_EditDegrees ();
@@ -2171,10 +2171,10 @@ void Deg_ChangeDegWWWInConfig (void)
 
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,NewWWW);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Deg_ShowConfiguration ();
@@ -2232,7 +2232,7 @@ void Deg_ChangeDegStatus (void)
 
    /***** Write message to show the change made
 	  and put button to go to degree changed *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_The_status_of_the_degree_X_has_changed,
             Gbl.Degs.EditingDeg.ShrtName);
    Deg_ShowAlertAndButtonToGoToDeg ();
@@ -2271,13 +2271,13 @@ void Deg_ShowAlertAndButtonToGoToDeg (void)
      {
       /***** Alert with button to go to degree *****/
       sprintf (Gbl.Title,Txt_Go_to_X,Gbl.Degs.EditingDeg.ShrtName);
-      Lay_ShowAlertAndButton (Gbl.Alert.Type,Gbl.Alert.Txt,
+      Ale_ShowAlertAndButton (Gbl.Alert.Type,Gbl.Alert.Txt,
                               ActSeeCrs,NULL,Deg_PutParamGoToDeg,
                               Lay_CONFIRM_BUTTON,Gbl.Title);
      }
    else
       /***** Alert *****/
-      Lay_ShowAlert (Gbl.Alert.Type,Gbl.Alert.Txt);
+      Ale_ShowAlert (Gbl.Alert.Type,Gbl.Alert.Txt);
   }
 
 static void Deg_PutParamGoToDeg (void)
diff --git a/swad_degree_type.c b/swad_degree_type.c
index d183b586..5362d4f4 100644
--- a/swad_degree_type.c
+++ b/swad_degree_type.c
@@ -232,7 +232,7 @@ static void DT_ListDegreeTypes (Act_Action_t NextAction,DT_Order_t SelectedOrder
       Lay_EndTable ();
      }
    else	// No degree types created
-      Lay_ShowAlert (Lay_INFO,Txt_No_types_of_degree);
+      Ale_ShowAlert (Ale_INFO,Txt_No_types_of_degree);
 
    /***** Button to create degree type  *****/
    if (DT_CheckIfICanCreateDegreeTypes ())
@@ -551,7 +551,7 @@ static void DT_CreateDegreeType (struct DegreeType *DegTyp)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_type_of_degree_X,
             DegTyp->DegTypName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -720,7 +720,7 @@ void DT_RecFormNewDegreeType (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_type_of_degree_X_already_exists,
                   DegTyp->DegTypName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else	// Add new degree type to database
          DT_CreateDegreeType (DegTyp);
@@ -728,7 +728,7 @@ void DT_RecFormNewDegreeType (void)
    else	// If there is not a degree type name
      {
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_name_of_the_new_type_of_degree);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -755,7 +755,7 @@ void DT_RemoveDegreeType (void)
 
    /***** Check if this degree type has degrees *****/
    if (DegTyp.NumDegs)	// Degree type has degrees => don't remove
-      Lay_ShowAlert (Lay_WARNING,Txt_To_remove_a_type_of_degree_you_must_first_remove_all_degrees_of_that_type);
+      Ale_ShowAlert (Ale_WARNING,Txt_To_remove_a_type_of_degree_you_must_first_remove_all_degrees_of_that_type);
    else	// Degree type has no degrees => remove it
      {
       /***** Remove degree type *****/
@@ -764,7 +764,7 @@ void DT_RemoveDegreeType (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_Type_of_degree_X_removed,
                DegTyp.DegTypName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -934,7 +934,7 @@ void DT_RenameDegreeType (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_type_of_degree_X_empty,
                DegTyp->DegTypName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -946,7 +946,7 @@ void DT_RenameDegreeType (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_type_of_degree_X_already_exists,
                      NewNameDegTyp);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -959,14 +959,14 @@ void DT_RenameDegreeType (void)
             /* Write message to show the change made */
             sprintf (Gbl.Alert.Txt,Txt_The_type_of_degree_X_has_been_renamed_as_Y,
                      DegTyp->DegTypName,NewNameDegTyp);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_type_of_degree_X_has_not_changed,
                   NewNameDegTyp);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -1018,7 +1018,7 @@ void DT_ChangeDegreeType (void)
 
    /***** Write message to show the change made
           and put button to go to degree changed *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_The_type_of_degree_of_the_degree_X_has_changed,
 	    Gbl.Degs.EditingDeg.FullName);
    Deg_ShowAlertAndButtonToGoToDeg ();
diff --git a/swad_department.c b/swad_department.c
index b65cb1f3..2d2bd64d 100644
--- a/swad_department.c
+++ b/swad_department.c
@@ -628,7 +628,7 @@ void Dpt_RemoveDepartment (void)
 
    /***** Check if this department has teachers *****/
    if (Dpt.NumTchs)	// Department has teachers ==> don't remove
-      Lay_ShowAlert (Lay_WARNING,Txt_To_remove_a_department_you_must_first_remove_all_teachers_in_the_department);
+      Ale_ShowAlert (Ale_WARNING,Txt_To_remove_a_department_you_must_first_remove_all_teachers_in_the_department);
    else	// Department has no teachers ==> remove it
      {
       /***** Remove department *****/
@@ -638,7 +638,7 @@ void Dpt_RemoveDepartment (void)
 
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_Department_X_removed,Dpt.FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -671,7 +671,7 @@ void Dpt_ChangeDepartIns (void)
    DB_QueryUPDATE (Query,"can not update the institution of a department");
 
    /***** Write message to show the change made *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_The_institution_of_the_department_has_changed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_The_institution_of_the_department_has_changed);
 
    /***** Show the form again *****/
    Dpt_EditDepartments ();
@@ -745,7 +745,7 @@ static void Dpt_RenameDepartment (Cns_ShrtOrFullName_t ShrtOrFullName)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_department_X_empty,
                CurrentDptName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -757,7 +757,7 @@ static void Dpt_RenameDepartment (Cns_ShrtOrFullName_t ShrtOrFullName)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_department_X_already_exists,
                      NewDptName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -767,14 +767,14 @@ static void Dpt_RenameDepartment (Cns_ShrtOrFullName_t ShrtOrFullName)
             /* Write message to show the change made */
             sprintf (Gbl.Alert.Txt,Txt_The_department_X_has_been_renamed_as_Y,
                      CurrentDptName,NewDptName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_department_X_has_not_changed,
                   CurrentDptName);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -846,12 +846,12 @@ void Dpt_ChangeDptWWW (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,
                NewWWW);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
      {
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_can_not_leave_the_web_address_empty);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1038,13 +1038,13 @@ void Dpt_RecFormNewDpt (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_department_X_already_exists,
                      Dpt->ShrtName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else if (Dpt_CheckIfDepartmentNameExists ("FullName",Dpt->FullName,-1L))
            {
             sprintf (Gbl.Alert.Txt,Txt_The_department_X_already_exists,
                      Dpt->FullName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else	// Add new department to database
             Dpt_CreateDepartment (Dpt);
@@ -1052,13 +1052,13 @@ void Dpt_RecFormNewDpt (void)
       else	// If there is not a web
         {
          sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_web_address_of_the_new_department);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
      }
    else	// If there is not a department name
      {
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_department);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1088,7 +1088,7 @@ static void Dpt_CreateDepartment (struct Department *Dpt)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_department_X,
             Dpt->FullName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
diff --git a/swad_duplicate.c b/swad_duplicate.c
index 53df6bea..cc6e46c1 100644
--- a/swad_duplicate.c
+++ b/swad_duplicate.c
@@ -97,13 +97,13 @@ void Dup_ReportUsrAsPossibleDuplicate (void)
          DB_QueryINSERT (Query,"can not report duplicate");
 
          /***** Show feedback message *****/
-         Lay_ShowAlert (Lay_SUCCESS,Txt_Thank_you_for_reporting_a_possible_duplicate_user);
+         Ale_ShowAlert (Ale_SUCCESS,Txt_Thank_you_for_reporting_a_possible_duplicate_user);
 	}
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -243,7 +243,7 @@ void Dup_GetUsrCodAndListSimilarUsrs (void)
    if (Usr_GetParamOtherUsrCodEncryptedAndGetUsrData ())
       Dup_ListSimilarUsrs ();
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 static void Dup_ListSimilarUsrs (void)
@@ -448,7 +448,7 @@ void Dup_RemoveUsrFromListDupUsrs (void)
       Dup_ListDuplicateUsrs ();
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
diff --git a/swad_enrolment.c b/swad_enrolment.c
index d075cee0..95d33218 100644
--- a/swad_enrolment.c
+++ b/swad_enrolment.c
@@ -362,7 +362,7 @@ void Enr_ReqAcceptRegisterInCrs (void)
    sprintf (Gbl.Alert.Txt,Txt_A_teacher_or_administrator_has_enroled_you_as_X_into_the_course_Y,
             Txt_ROLES_SINGUL_abc[Gbl.Usrs.Me.UsrDat.RoleInCurrentCrsDB][Gbl.Usrs.Me.UsrDat.Sex],
             Gbl.CurrentCrs.Crs.FullName);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Send button to accept register in the current course *****/
    Act_FormStart (Gbl.Usrs.Me.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActAccEnrStd :
@@ -557,7 +557,7 @@ static void Enr_ReqAdminUsrs (Rol_Role_t Role)
 	    Enr_ReqAnotherUsrIDToRegisterRemove (Role);
 	 break;
       default:
-	 Lay_ShowAlert (Lay_ERROR,Txt_You_dont_have_permission_to_perform_this_action);
+	 Ale_ShowAlert (Ale_ERROR,Txt_You_dont_have_permission_to_perform_this_action);
 	 break;
      }
   }
@@ -612,7 +612,7 @@ static void Enr_ShowFormRegRemSeveralUsrs (Rol_Role_t Role)
             The_ClassTitle[Gbl.Prefs.Theme],
             Txt_Step_1_Provide_a_list_of_users);
 
-   Lay_ShowAlert (Lay_INFO,Txt_Type_or_paste_a_list_of_IDs_nicks_or_emails_);
+   Ale_ShowAlert (Ale_INFO,Txt_Type_or_paste_a_list_of_IDs_nicks_or_emails_);
    Enr_PutAreaToEnterUsrsIDs ();
 
    /***** Step 2: Put different actions to register/remove users to/from current course *****/
@@ -633,7 +633,7 @@ static void Enr_ShowFormRegRemSeveralUsrs (Rol_Role_t Role)
      {
       if (Gbl.CurrentCrs.Grps.NumGrps)	// This course has groups?
 	{
-	 Lay_ShowAlert (Lay_INFO,Txt_Select_the_groups_in_from_which_you_want_to_register_remove_users_);
+	 Ale_ShowAlert (Ale_INFO,Txt_Select_the_groups_in_from_which_you_want_to_register_remove_users_);
 	 Grp_ShowLstGrpsToChgOtherUsrsGrps (-1L);
 	}
       else
@@ -641,7 +641,7 @@ static void Enr_ShowFormRegRemSeveralUsrs (Rol_Role_t Role)
 	 /* Write help message */
 	 sprintf (Gbl.Alert.Txt,Txt_No_groups_have_been_created_in_the_course_X_Therefore_,
 		  Gbl.CurrentCrs.Crs.FullName);
-	 Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 	}
      }
 
@@ -765,7 +765,7 @@ void Enr_RemoveOldUsrs (void)
                NumUsrs,
                MonthsWithoutAccess,
                Cfg_PLATFORM_SHORT_NAME);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
       /***** Initialize structure with user's data *****/
       Usr_UsrDataConstructor (&UsrDat);
@@ -797,7 +797,7 @@ void Enr_RemoveOldUsrs (void)
    /***** Write end message *****/
    sprintf (Gbl.Alert.Txt,Txt_X_users_have_been_eliminated,
             NumUsrsEliminated);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -1374,7 +1374,7 @@ static void Enr_ReceiveFormUsrsCrs (Rol_Role_t Role)
 	 if (!Grp_CheckIfSelectionGrpsIsValid (&LstGrps))
 	   {
 	    /* Show warning message and exit */
-	    Lay_ShowAlert (Lay_WARNING,Txt_In_a_type_of_group_with_single_enrolment_students_can_not_be_registered_in_more_than_one_group);
+	    Ale_ShowAlert (Ale_WARNING,Txt_In_a_type_of_group_with_single_enrolment_students_can_not_be_registered_in_more_than_one_group);
 
 	    /* Free memory used by lists of groups and abort */
 	    Grp_FreeListCodGrp (&LstGrps);
@@ -1611,30 +1611,30 @@ static void Enr_ReceiveFormUsrsCrs (Rol_Role_t Role)
 	 switch (NumUsrsEliminated)
 	   {
 	    case 0:
-	       Lay_ShowAlert (Lay_INFO,Txt_No_user_has_been_eliminated);
+	       Ale_ShowAlert (Ale_INFO,Txt_No_user_has_been_eliminated);
 	       break;
 	    case 1:
-	       Lay_ShowAlert (Lay_SUCCESS,Txt_One_user_has_been_eliminated);
+	       Ale_ShowAlert (Ale_SUCCESS,Txt_One_user_has_been_eliminated);
 	       break;
 	    default:
 	       sprintf (Gbl.Alert.Txt,Txt_X_users_have_been_eliminated,
 			NumUsrsEliminated);
-	       Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	       Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	       break;
 	   }
       else                        // Only remove from course / groups
 	 switch (NumUsrsRemoved)
 	   {
 	    case 0:
-	       Lay_ShowAlert (Lay_INFO,Txt_No_user_has_been_removed);
+	       Ale_ShowAlert (Ale_INFO,Txt_No_user_has_been_removed);
 	       break;
 	    case 1:
-	       Lay_ShowAlert (Lay_SUCCESS,Txt_One_user_has_been_removed);
+	       Ale_ShowAlert (Ale_SUCCESS,Txt_One_user_has_been_removed);
 	       break;
 	    default:
 	       sprintf (Gbl.Alert.Txt,Txt_X_users_have_been_removed,
 			NumUsrsRemoved);
-	       Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	       Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	       break;
 	   }
      }
@@ -1642,15 +1642,15 @@ static void Enr_ReceiveFormUsrsCrs (Rol_Role_t Role)
       switch (NumUsrsRegistered)
 	{
 	 case 0:
-	    Lay_ShowAlert (Lay_INFO,Txt_No_user_has_been_enroled);
+	    Ale_ShowAlert (Ale_INFO,Txt_No_user_has_been_enroled);
 	    break;
 	 case 1:
-	    Lay_ShowAlert (Lay_SUCCESS,Txt_One_user_has_been_enroled);
+	    Ale_ShowAlert (Ale_SUCCESS,Txt_One_user_has_been_enroled);
 	    break;
 	 default:
 	    sprintf (Gbl.Alert.Txt,Txt_X_users_have_been_enroled_including_possible_repetitions,
 		     NumUsrsRegistered);
-	    Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	    Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	    break;
 	}
 
@@ -1751,7 +1751,7 @@ void Enr_AskRemAllStdsThisCrs (void)
       /* Start alert */
       sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_X_students_from_the_course_Y_,
                NumStds,Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+      Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
       /* Show form to request confirmation */
       Act_FormStart (ActRemAllStdCrs);
@@ -1761,7 +1761,7 @@ void Enr_AskRemAllStdsThisCrs (void)
       Act_FormEnd ();
 
       /* End alert */
-      Lay_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
+      Ale_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
      }
    else
       /***** Show warning indicating no students found *****/
@@ -1786,7 +1786,7 @@ void Enr_RemAllStdsThisCrs (void)
 	{
 	 sprintf (Gbl.Alert.Txt,Txt_The_X_students_who_belonged_to_the_course_Y_have_been_removed_from_it,
 		  NumStdsInCrs,Gbl.CurrentCrs.Crs.FullName);
-	 Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	}
       else
 	 /***** Show warning indicating no students found *****/
@@ -1840,7 +1840,7 @@ void Enr_ReqSignUpInCrs (void)
       sprintf (Gbl.Alert.Txt,Txt_You_were_already_enroled_as_X_in_the_course_Y,
                Txt_ROLES_SINGUL_abc[Gbl.Usrs.Me.UsrDat.RoleInCurrentCrsDB][Gbl.Usrs.Me.UsrDat.Sex],
                Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else if (Gbl.Usrs.Me.LoggedRole == Rol__GUEST_ ||
 	    Gbl.Usrs.Me.LoggedRole == Rol_VISITOR)
@@ -1872,7 +1872,7 @@ void Enr_SignUpInCrs (void)
       sprintf (Gbl.Alert.Txt,Txt_You_were_already_enroled_as_X_in_the_course_Y,
                Txt_ROLES_SINGUL_abc[Gbl.Usrs.Me.UsrDat.RoleInCurrentCrsDB][Gbl.Usrs.Me.UsrDat.Sex],
                Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -1929,7 +1929,7 @@ void Enr_SignUpInCrs (void)
       sprintf (Gbl.Alert.Txt,Txt_Your_request_for_enrolment_as_X_in_the_course_Y_has_been_accepted_for_processing,
                Txt_ROLES_SINGUL_abc[RoleFromForm][Gbl.Usrs.Me.UsrDat.Sex],
                Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
       /***** Notify teachers or admins by email about the new enrolment request *****/
       // If this course has teachers ==> send notification to teachers
@@ -2027,7 +2027,7 @@ void Enr_AskIfRejectSignUp (void)
          /* User already belongs to this course */
          sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_is_already_enroled_in_the_course_Y,
                   Gbl.Usrs.Other.UsrDat.FullName,Gbl.CurrentCrs.Crs.FullName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
          Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
 
          /* Remove inscription request because it has not sense */
@@ -2045,13 +2045,13 @@ void Enr_AskIfRejectSignUp (void)
                      Gbl.Usrs.Other.UsrDat.FullName,
                      Txt_ROLES_SINGUL_abc[Role][Gbl.Usrs.Other.UsrDat.Sex],
                      Gbl.CurrentCrs.Crs.FullName);
-	    Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+	    Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
 	    /* Show user's record */
             Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
 
 	    /* End alert */
-	    Lay_ShowAlertAndButton2 (ActRejSignUp,NULL,
+	    Ale_ShowAlertAndButton2 (ActRejSignUp,NULL,
 	                             Usr_PutParamOtherUsrCodEncrypted,
 				     Lay_REMOVE_BUTTON,Txt_Reject);
            }
@@ -2060,7 +2060,7 @@ void Enr_AskIfRejectSignUp (void)
         }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -2085,7 +2085,7 @@ void Enr_RejectSignUp (void)
          /* User already belongs to this course */
          sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_is_already_enroled_in_the_course_Y,
                   Gbl.Usrs.Other.UsrDat.FullName,Gbl.CurrentCrs.Crs.FullName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
          Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
         }
 
@@ -2095,10 +2095,10 @@ void Enr_RejectSignUp (void)
       /* Confirmation message */
       sprintf (Gbl.Alert.Txt,Txt_Enrolment_of_X_rejected,
                Gbl.Usrs.Other.UsrDat.FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
 
    /* Show again the rest of registrarion requests */
    Enr_ShowEnrolmentRequests ();
@@ -2818,7 +2818,7 @@ static void Enr_ShowEnrolmentRequestsGivenRoles (unsigned RolesSelected)
       Usr_UsrDataDestructor (&UsrDat);
      }
    else	// There are no requests
-      Lay_ShowAlert (Lay_INFO,Txt_No_enrolment_requests);
+      Ale_ShowAlert (Ale_INFO,Txt_No_enrolment_requests);
 
    /***** End frame *****/
    Lay_EndRoundFrame ();
@@ -3079,7 +3079,7 @@ static void Enr_AskIfRegRemUsr (struct ListUsrCods *ListUsrCods,Rol_Role_t Role)
 	{
 	 sprintf (Gbl.Alert.Txt,Txt_There_are_X_users_with_the_ID_Y,
 		  ListUsrCods->NumUsrs,Gbl.Usrs.Other.UsrDat.UsrIDNickOrEmail);
-	 Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 	}
 
       /***** For each user found... *****/
@@ -3107,7 +3107,7 @@ static void Enr_AskIfRegRemUsr (struct ListUsrCods *ListUsrCods,Rol_Role_t Role)
 	       else        // Enrolment not yet accepted
 		  sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_is_already_in_the_course_Y_but_has_not_yet_accepted_the_enrolment,
 			   Gbl.Usrs.Other.UsrDat.FullName,Gbl.CurrentCrs.Crs.FullName);
-	       Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+	       Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
 	       Enr_ShowFormToEditOtherUsr ();
 	      }
@@ -3115,7 +3115,7 @@ static void Enr_AskIfRegRemUsr (struct ListUsrCods *ListUsrCods,Rol_Role_t Role)
 	      {
 	       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_already_exists_in_Y_but_is_not_yet_enroled_in_the_course_Z,
 			Gbl.Usrs.Other.UsrDat.FullName,Cfg_PLATFORM_SHORT_NAME,Gbl.CurrentCrs.Crs.FullName);
-	       Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+	       Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
 	       Enr_ShowFormToEditOtherUsr ();
 	      }
@@ -3124,7 +3124,7 @@ static void Enr_AskIfRegRemUsr (struct ListUsrCods *ListUsrCods,Rol_Role_t Role)
 	   {
 	    sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_already_exists_in_Y,
 		     Gbl.Usrs.Other.UsrDat.FullName,Cfg_PLATFORM_SHORT_NAME);
-	    Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+	    Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
 	    Enr_ShowFormToEditOtherUsr ();
 	   }
@@ -3147,7 +3147,7 @@ static void Enr_AskIfRegRemUsr (struct ListUsrCods *ListUsrCods,Rol_Role_t Role)
 	 /***** Show form to enter the data of a new user *****/
 	 sprintf (Gbl.Alert.Txt,Txt_The_user_is_new_not_yet_in_X,
 		  Cfg_PLATFORM_SHORT_NAME);
-	 Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 	 Rec_ShowFormOtherNewSharedRecord (&Gbl.Usrs.Other.UsrDat,Role);
 	}
       else        // User's ID is not valid
@@ -3155,7 +3155,7 @@ static void Enr_AskIfRegRemUsr (struct ListUsrCods *ListUsrCods,Rol_Role_t Role)
 	 /* Write message and request a new user's ID */
 	 sprintf (Gbl.Alert.Txt,Txt_If_this_is_a_new_user_in_X_you_should_indicate_her_his_ID,
 		  Cfg_PLATFORM_SHORT_NAME);
-	 Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	 Enr_ReqRegRemUsr (Role);
 	}
      }
@@ -3242,10 +3242,10 @@ static void Enr_AddAdm (Sco_Scope_t Scope,long Cod,const char *InsCtrDegName)
             Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
            }
          else
-            Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+            Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
         }
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
   }
 
@@ -3277,7 +3277,7 @@ static void Enr_RegisterAdmin (struct UsrData *UsrDat,Sco_Scope_t Scope,long Cod
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_enroled_as_administrator_of_Y,
                UsrDat->FullName,InsCtrDegName);
      }
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3339,10 +3339,10 @@ static void Enr_ReqRemOrRemUsrFromCrs (Enr_ReqDelOrDelUsr_t ReqDelOrDelUsr)
 	       break;
 	   }
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -3448,14 +3448,14 @@ static void Enr_ReqRemOrRemAdm (Enr_ReqDelOrDelUsr_t ReqDelOrDelUsr,Sco_Scope_t
               {
                sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_is_not_an_administrator_of_Y,
                         Gbl.Usrs.Other.UsrDat.FullName,InsCtrDegName);
-               Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+               Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
               }
            }
          else
-            Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+            Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
         }
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
   }
 
@@ -3496,7 +3496,7 @@ static void Enr_ReqAddAdm (Sco_Scope_t Scope,long Cod,const char *InsCtrDegName)
               {
                sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_is_already_an_administrator_of_Y,
                         Gbl.Usrs.Other.UsrDat.FullName,InsCtrDegName);
-               Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+               Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
                Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
               }
             else
@@ -3505,22 +3505,22 @@ static void Enr_ReqAddAdm (Sco_Scope_t Scope,long Cod,const char *InsCtrDegName)
 	       /* Start alert */
                sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_register_the_following_user_as_an_administrator_of_X,
                         InsCtrDegName);
-	       Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+	       Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
 	       /* Show user's record */
                Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
 
 	       /* End alert */
-	       Lay_ShowAlertAndButton2 (Enr_ActNewAdm[Scope],NULL,
+	       Ale_ShowAlertAndButton2 (Enr_ActNewAdm[Scope],NULL,
 	                                Usr_PutParamOtherUsrCodEncrypted,
 	                                Lay_CREATE_BUTTON,Txt_Register_user_IN_A_COURSE_OR_DEGREE);
               }
            }
          else
-            Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+            Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
         }
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
   }
 
@@ -3545,7 +3545,7 @@ void Enr_AcceptRegisterMeInCrs (void)
    /***** Confirmation message *****/
    sprintf (Gbl.Alert.Txt,Txt_You_have_confirmed_your_enrolment_in_the_course_X,
             Gbl.CurrentCrs.Crs.FullName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3565,7 +3565,7 @@ void Enr_CreateNewUsr1 (void)
    ID_GetParamOtherUsrIDPlain ();	// User's ID was already modified and passed as a hidden parameter
 
    /***** Initialize alert type and message *****/
-   Gbl.Alert.Type = Lay_NONE;	// Do not show alert
+   Gbl.Alert.Type = Ale_NONE;	// Do not show alert
 
    if (ID_CheckIfUsrIDIsValid (Gbl.Usrs.Other.UsrDat.IDs.List[0].ID))        // User's ID valid
      {
@@ -3596,7 +3596,7 @@ void Enr_CreateNewUsr1 (void)
 	       Enr_ModifyRoleInCurrentCrs (&Gbl.Usrs.Other.UsrDat,NewRole);
 
 	       /* Success message */
-               Gbl.Alert.Type = Lay_SUCCESS;
+               Gbl.Alert.Type = Ale_SUCCESS;
 	       sprintf (Gbl.Alert.Txt,Txt_The_role_of_THE_USER_X_in_the_course_Y_has_changed_from_A_to_B,
 			Gbl.Usrs.Other.UsrDat.FullName,Gbl.CurrentCrs.Crs.FullName,
 			Txt_ROLES_SINGUL_abc[OldRole][Gbl.Usrs.Other.UsrDat.Sex],
@@ -3610,7 +3610,7 @@ void Enr_CreateNewUsr1 (void)
 	                                 Enr_SET_ACCEPTED_TO_FALSE);
 
 	    /* Success message */
-            Gbl.Alert.Type = Lay_SUCCESS;
+            Gbl.Alert.Type = Ale_SUCCESS;
 	    sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_enroled_in_the_course_Y,
 		     Gbl.Usrs.Other.UsrDat.FullName,Gbl.CurrentCrs.Crs.FullName);
 	   }
@@ -3625,7 +3625,7 @@ void Enr_CreateNewUsr1 (void)
    else        // User's ID not valid
      {
       /***** Error message *****/
-      Gbl.Alert.Type = Lay_ERROR;
+      Gbl.Alert.Type = Ale_ERROR;
       sprintf (Gbl.Alert.Txt,Txt_The_ID_X_is_not_valid,
                Gbl.Usrs.Other.UsrDat.IDs.List[0].ID);
      }
@@ -3633,14 +3633,14 @@ void Enr_CreateNewUsr1 (void)
 
 void Enr_CreateNewUsr2 (void)
   {
-   if (Gbl.Alert.Type == Lay_ERROR)	// User's ID not valid
-      Lay_ShowPendingAlert ();
+   if (Gbl.Alert.Type == Ale_ERROR)	// User's ID not valid
+      Ale_ShowPendingAlert ();
    else					// User's ID valid
      {
       if (Gbl.CurrentCrs.Crs.CrsCod > 0)	// Course selected
 	{
 	 /***** Show optional alert *****/
-         Lay_ShowPendingAlert ();
+         Ale_ShowPendingAlert ();
 
 	 /***** Change user's groups *****/
 	 if (Gbl.CurrentCrs.Grps.NumGrps)	// This course has groups?
@@ -3666,7 +3666,7 @@ void Enr_ModifyUsr1 (void)
    Rol_Role_t NewRole;
 
    /***** Initialize alert type and message *****/
-   Gbl.Alert.Type = Lay_NONE;	// Do not show alert
+   Gbl.Alert.Type = Ale_NONE;	// Do not show alert
 
    /***** Get user from form *****/
    if (Usr_GetParamOtherUsrCodEncryptedAndGetUsrData ())
@@ -3708,7 +3708,7 @@ void Enr_ModifyUsr1 (void)
 			Enr_ModifyRoleInCurrentCrs (&Gbl.Usrs.Other.UsrDat,NewRole);
 
 			/* Set success message */
-			Gbl.Alert.Type = Lay_SUCCESS;
+			Gbl.Alert.Type = Ale_SUCCESS;
 			sprintf (Gbl.Alert.Txt,Txt_The_role_of_THE_USER_X_in_the_course_Y_has_changed_from_A_to_B,
 				 Gbl.Usrs.Other.UsrDat.FullName,Gbl.CurrentCrs.Crs.FullName,
 				 Txt_ROLES_SINGUL_abc[OldRole][Gbl.Usrs.Other.UsrDat.Sex],
@@ -3722,7 +3722,7 @@ void Enr_ModifyUsr1 (void)
 						  Enr_SET_ACCEPTED_TO_FALSE);
 
 		     /* Set success message */
-	             Gbl.Alert.Type = Lay_SUCCESS;
+	             Gbl.Alert.Type = Ale_SUCCESS;
 		     sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_enroled_in_the_course_Y,
 			      Gbl.Usrs.Other.UsrDat.FullName,Gbl.CurrentCrs.Crs.FullName);
 		    }
@@ -3735,59 +3735,59 @@ void Enr_ModifyUsr1 (void)
 		 }
 	      }
 	    else
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REGISTER_ONE_DEGREE_ADMIN:
 	    if (Gbl.Usrs.Me.LoggedRole < Rol_CTR_ADM)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REGISTER_ONE_CENTRE_ADMIN:
 	    if (Gbl.Usrs.Me.LoggedRole < Rol_INS_ADM)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REGISTER_ONE_INSTITUTION_ADMIN:
 	    if (Gbl.Usrs.Me.LoggedRole != Rol_SYS_ADM)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REPORT_USR_AS_POSSIBLE_DUPLICATE:
 	    if (ItsMe || Gbl.Usrs.Me.LoggedRole < Rol_TEACHER)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REMOVE_ONE_USR_FROM_CRS:
 	    if (!ItsMe && Gbl.Usrs.Me.LoggedRole < Rol_TEACHER)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REMOVE_ONE_DEGREE_ADMIN:
 	    if (!ItsMe && Gbl.Usrs.Me.LoggedRole < Rol_CTR_ADM)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REMOVE_ONE_CENTRE_ADMIN:
 	    if (!ItsMe && Gbl.Usrs.Me.LoggedRole < Rol_INS_ADM)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_REMOVE_ONE_INSTITUTION_ADMIN:
 	    if (!ItsMe && Gbl.Usrs.Me.LoggedRole != Rol_SYS_ADM)
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 case Enr_ELIMINATE_ONE_USR_FROM_PLATFORM:
 	    if (!Acc_CheckIfICanEliminateAccount (Gbl.Usrs.Other.UsrDat.UsrCod))
-	       Gbl.Alert.Type = Lay_WARNING;
+	       Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	 default:
-	    Gbl.Alert.Type = Lay_WARNING;
+	    Gbl.Alert.Type = Ale_WARNING;
 	    break;
 	}
      }
    else
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
   }
 
 void Enr_ModifyUsr2 (void)
   {
    extern const char *Txt_User_not_found_or_you_do_not_have_permission_;
 
-   if (Gbl.Alert.Type == Lay_WARNING)
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+   if (Gbl.Alert.Type == Ale_WARNING)
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
    else // No error
       switch (Gbl.Usrs.RegRemAction)
 	{
@@ -3795,7 +3795,7 @@ void Enr_ModifyUsr2 (void)
 	    if (Gbl.CurrentCrs.Crs.CrsCod > 0)
 	      {
                /***** Show optional alert *****/
-               Lay_ShowPendingAlert ();
+               Ale_ShowPendingAlert ();
 
 	       /***** Change user's groups *****/
 	       if (Gbl.CurrentCrs.Grps.NumGrps)	// This course has groups?
@@ -3882,7 +3882,7 @@ static void Enr_AskIfRemoveUsrFromCrs (struct UsrData *UsrDat,bool ItsMe)
                ItsMe ? Txt_Do_you_really_want_to_be_removed_from_the_course_X :
 		       Txt_Do_you_really_want_to_remove_the_following_user_from_the_course_X,
 	       Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+      Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
       /* Show user's record */
       Rec_ShowSharedRecordUnmodifiable (UsrDat);
@@ -3897,10 +3897,10 @@ static void Enr_AskIfRemoveUsrFromCrs (struct UsrData *UsrDat,bool ItsMe)
       Act_FormEnd ();
 
       /* End alert */
-      Lay_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
+      Ale_ShowAlertAndButton2 (ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -3954,12 +3954,12 @@ static void Enr_EffectivelyRemUsrFromCrs (struct UsrData *UsrDat,struct Course *
         {
          sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_from_the_course_Y,
                   UsrDat->FullName,Crs->FullName);
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
         }
      }
    else        // User does not belong to course
       if (QuietOrVerbose == Cns_VERBOSE)
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -3991,13 +3991,13 @@ static void Enr_AskIfRemAdm (bool ItsMe,Sco_Scope_t Scope,const char *InsCtrDegN
                ItsMe ? Txt_Do_you_really_want_to_be_removed_as_an_administrator_of_X :
                        Txt_Do_you_really_want_to_remove_the_following_user_as_an_administrator_of_X,
                InsCtrDegName);
-      Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+      Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
       /* Show user's record */
       Rec_ShowSharedRecordUnmodifiable (&Gbl.Usrs.Other.UsrDat);
 
       /* End alert */
-      Lay_ShowAlertAndButton2 (Enr_ActRemAdm[Scope],NULL,
+      Ale_ShowAlertAndButton2 (Enr_ActRemAdm[Scope],NULL,
                                Usr_PutParamOtherUsrCodEncrypted,
                                Lay_REMOVE_BUTTON,
                                ItsMe ? Txt_Remove_me_as_an_administrator :
@@ -4029,12 +4029,12 @@ static void Enr_EffectivelyRemAdm (struct UsrData *UsrDat,Sco_Scope_t Scope,
 
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_as_administrator_of_Y,
                UsrDat->FullName,InsCtrDegName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else        // User is not an administrator of the current institution/centre/degree
      {
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_is_not_an_administrator_of_Y,
                UsrDat->FullName,InsCtrDegName);
-      Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
      }
   }
diff --git a/swad_exam.c b/swad_exam.c
index de85361d..5e014ffa 100644
--- a/swad_exam.c
+++ b/swad_exam.c
@@ -292,7 +292,7 @@ void Exa_ReceiveExamAnnouncement2 (void)
    struct SocialPublishing SocPub;
 
    /***** Show message *****/
-   Lay_ShowAlert (Lay_SUCCESS,
+   Ale_ShowAlert (Ale_SUCCESS,
                   Gbl.ExamAnns.NewExamAnnouncement ? Txt_Created_new_announcement_of_exam :
                                                               Txt_The_announcement_of_exam_has_been_successfully_updated);
 
@@ -364,7 +364,7 @@ void Exa_ReqRemoveExamAnnouncement (void)
 
    /***** Show question and button to remove exam announcement *****/
    /* Start alert */
-   Lay_ShowAlertAndButton1 (Lay_QUESTION,Txt_Do_you_really_want_to_remove_the_following_announcement_of_exam);
+   Ale_ShowAlertAndButton1 (Ale_QUESTION,Txt_Do_you_really_want_to_remove_the_following_announcement_of_exam);
 
    /* Show announcement */
    Exa_AllocMemExamAnnouncement ();
@@ -373,7 +373,7 @@ void Exa_ReqRemoveExamAnnouncement (void)
    Exa_FreeMemExamAnnouncement ();
 
    /* End alert */
-   Lay_ShowAlertAndButton2 (ActRemExaAnn,NULL,Exa_PutParamExaCodToEdit,
+   Ale_ShowAlertAndButton2 (ActRemExaAnn,NULL,Exa_PutParamExaCodToEdit,
 			    Lay_REMOVE_BUTTON,Txt_Remove);
   }
 
@@ -414,7 +414,7 @@ void Exa_RemoveExamAnnouncement2 (void)
    extern const char *Txt_Announcement_of_exam_removed;
 
    /***** Write message *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Announcement_of_exam_removed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Announcement_of_exam_removed);
 
    /***** List again all the remaining exam announcements *****/
    Exa_ListExamAnnouncementsEdit ();
@@ -448,7 +448,7 @@ void Exa_HideExamAnnouncement2 (void)
    extern const char *Txt_The_announcement_of_exam_is_now_hidden;
 
    /***** Write message to show the change made *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_The_announcement_of_exam_is_now_hidden);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_The_announcement_of_exam_is_now_hidden);
 
    /***** Show exam announcements again *****/
    Exa_ListExamAnnouncementsEdit ();
@@ -482,7 +482,7 @@ void Exa_UnhideExamAnnouncement2 (void)
    extern const char *Txt_The_announcement_of_exam_is_now_visible;
 
    /***** Write message to show the change made *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_The_announcement_of_exam_is_now_visible);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_The_announcement_of_exam_is_now_visible);
 
    /***** Show exam announcements again *****/
    Exa_ListExamAnnouncementsEdit ();
@@ -660,7 +660,7 @@ static void Exa_ListExamAnnouncements (Exa_TypeViewExamAnnouncement_t TypeViewEx
      {
       sprintf (Gbl.Alert.Txt,Txt_No_announcements_of_exams_of_X,
                Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
 
    /***** List the existing exam announcements *****/
diff --git a/swad_file_browser.c b/swad_file_browser.c
index e5c10f9e..f0e89b5f 100644
--- a/swad_file_browser.c
+++ b/swad_file_browser.c
@@ -2857,7 +2857,7 @@ bool Brw_UpdateFoldersAssigmentsIfExistForAllUsrs (const char *OldFolderName,con
                      NewFolderName);
             if (rename (PathOldFolder,PathNewFolder))	// Fail
 	      {
-               Lay_ShowAlert (Lay_ERROR,Txt_Can_not_rename_a_folder_of_assignment);
+               Ale_ShowAlert (Ale_ERROR,Txt_Can_not_rename_a_folder_of_assignment);
                NumUsrsError++;
 	      }
             else					// Success
@@ -2884,11 +2884,11 @@ bool Brw_UpdateFoldersAssigmentsIfExistForAllUsrs (const char *OldFolderName,con
                Txt_Users,NumUsrs,
                Txt_Folders_renamed,NumUsrsSuccess,
                Txt_Folders_not_renamed,NumUsrsError);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
    else
       /***** Warning message *****/
-      Lay_ShowAlert (Lay_WARNING,Txt_Can_not_rename_a_folder_of_assignment);
+      Ale_ShowAlert (Ale_WARNING,Txt_Can_not_rename_a_folder_of_assignment);
 
    /***** Free structure that stores the query result *****/
    DB_FreeMySQLResult (&mysql_res);
@@ -2951,7 +2951,7 @@ static void Brw_SetAndCheckQuota (void)
    Brw_SetMaxQuota ();
    Brw_CalcSizeOfDir (Gbl.FileBrowser.Priv.PathRootFolder);
    if (Brw_CheckIfQuotaExceded ())
-      Lay_ShowAlert (Lay_WARNING,Txt_Quota_exceeded);
+      Ale_ShowAlert (Ale_WARNING,Txt_Quota_exceeded);
   }
 
 /*****************************************************************************/
@@ -3228,7 +3228,7 @@ static void Brw_ShowFileBrowsersAsgWrkCrs (void)
    else	// If no users are selected...
      {
       // ...write warning alert
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_users);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_users);
       // ...and show again the form
       Brw_AskEditWorksCrs ();
      }
@@ -3467,7 +3467,7 @@ void Brw_ShowAgainFileBrowserOrWorks (void)
      {
       case Brw_ADMI_MARKS_CRS:
       case Brw_ADMI_MARKS_GRP:
-         Lay_ShowAlert (Lay_INFO,Txt_Files_of_marks_must_contain_a_table_in_HTML_format_);
+         Ale_ShowAlert (Ale_INFO,Txt_Files_of_marks_must_contain_a_table_in_HTML_format_);
          break;
       default:
          break;
@@ -3477,7 +3477,7 @@ void Brw_ShowAgainFileBrowserOrWorks (void)
    sprintf (Gbl.Alert.Txt,Txt_Disclaimer_the_files_hosted_here_,
             Cfg_PLATFORM_SHORT_NAME,
             Cfg_PLATFORM_RESPONSIBLE_EMAIL);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -6189,7 +6189,7 @@ void Brw_AskRemFileFromTree (void)
                              Gbl.FileBrowser.FilFolLnkName,FileNameToShow);
       sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_FILE_OR_LINK_X,
                FileNameToShow);
-      Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+      Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                               Brw_ActRemoveFile[Gbl.FileBrowser.Type],NULL,
                               Brw_PutParamsRemFile,
                               Lay_REMOVE_BUTTON,
@@ -6255,7 +6255,7 @@ void Brw_RemFileFromTree (void)
 
 	 /* Message of confirmation of removing */
 	 sprintf (Gbl.Alert.Txt,Txt_FILE_X_removed,FileNameToShow);
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
         }
       else		// File / link not found
          Lay_ShowErrorAndExit ("File / link not found.");
@@ -6310,7 +6310,7 @@ void Brw_RemFolderFromTree (void)
             /* Message of confirmation of successfull removing */
 	    sprintf (Gbl.Alert.Txt,Txt_Folder_X_removed,
                      Gbl.FileBrowser.FilFolLnkName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
       else		// Folder not found
          Lay_ShowErrorAndExit ("Folder not found.");
@@ -6334,7 +6334,7 @@ static void Brw_AskConfirmRemoveFolderNotEmpty (void)
    /***** Show question and button to remove not empty folder *****/
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_folder_X,
             Gbl.FileBrowser.FilFolLnkName);
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            Brw_ActRemoveFolderNotEmpty[Gbl.FileBrowser.Type],NULL,
 			   Brw_PutParamsRemFolder,
 			   Lay_REMOVE_BUTTON,Txt_Remove_folder);
@@ -6385,7 +6385,7 @@ void Brw_RemSubtreeInFileBrowser (void)
       /***** Write message of confirmation *****/
       sprintf (Gbl.Alert.Txt,Txt_Folder_X_and_all_its_contents_removed,
                Gbl.FileBrowser.FilFolLnkName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show again file browser *****/
@@ -6667,7 +6667,7 @@ static void Brw_WriteCurrentClipboard (void)
                Txt_Copy_source,TxtClipboardZone,
                Txt_all_files_inside_the_root_folder);
 
-   Lay_ShowAlert (Lay_CLIPBOARD,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_CLIPBOARD,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -7394,7 +7394,7 @@ void Brw_PasteIntoFileBrowser (void)
      }
    else
       /***** Write message ******/
-      Lay_ShowAlert (Lay_WARNING,Txt_Nothing_has_been_pasted_because_the_clipboard_is_empty_);
+      Ale_ShowAlert (Ale_WARNING,Txt_Nothing_has_been_pasted_because_the_clipboard_is_empty_);
 
    /***** Show again file browser *****/
    Brw_ShowAgainFileBrowserOrWorks ();
@@ -7564,7 +7564,7 @@ static void Brw_PasteClipboard (void)
                   Txt_Files_copied  ,Pasted.NumFiles,
                   Txt_Links_copied  ,Pasted.NumLinks,
                   Txt_Folders_copied,Pasted.NumFolds);
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
          /***** Notify new files *****/
 	 if (Pasted.NumFiles ||
@@ -7720,7 +7720,7 @@ static bool Brw_PasteTreeIntoFolder (unsigned LevelOrg,
 	 default:
             Lay_ShowErrorAndExit ("Can not paste unknown file type.");
         }
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
       CopyIsGoingSuccessful = false;
      }
    else	// Quota not exceeded
@@ -7736,7 +7736,7 @@ static bool Brw_PasteTreeIntoFolder (unsigned LevelOrg,
 		     FileType == Brw_IS_FILE ? Txt_The_copy_has_stopped_when_trying_to_paste_the_file_X_because_there_is_already_an_object_with_that_name :
 					       Txt_The_copy_has_stopped_when_trying_to_paste_the_link_X_because_there_is_already_an_object_with_that_name,
 		     FileNameToShow);
-	    Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	    Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	    CopyIsGoingSuccessful = false;
 	   }
 	 else	// Destination file does not exist
@@ -7753,7 +7753,7 @@ static bool Brw_PasteTreeIntoFolder (unsigned LevelOrg,
 		 {
 		  sprintf (Gbl.Alert.Txt,Txt_The_copy_has_stopped_when_trying_to_paste_the_file_X_because_you_can_not_paste_a_file_here_of_a_type_other_than_HTML,
 			   FileNameToShow);
-		  Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		  Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	          CopyIsGoingSuccessful = false;
 		 }
 	      }
@@ -7768,7 +7768,7 @@ static bool Brw_PasteTreeIntoFolder (unsigned LevelOrg,
 		  sprintf (Gbl.Alert.Txt,FileType == Brw_IS_FILE ? Txt_The_copy_has_stopped_when_trying_to_paste_the_file_X_because_it_would_exceed_the_disk_quota :
 								 Txt_The_copy_has_stopped_when_trying_to_paste_the_link_X_because_it_would_exceed_the_disk_quota,
 			   FileNameToShow);
-		  Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		  Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 		  CopyIsGoingSuccessful = false;
 		 }
 	       else	// Quota not exceeded
@@ -7810,7 +7810,7 @@ static bool Brw_PasteTreeIntoFolder (unsigned LevelOrg,
 		 {
 		  sprintf (Gbl.Alert.Txt,Txt_The_copy_has_stopped_when_trying_to_paste_the_folder_X_because_it_would_exceed_the_disk_quota,
 			   FileNameToShow);
-		  Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		  Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 		  CopyIsGoingSuccessful = false;
 		 }
 	       else	// Quota not exceded
@@ -7934,7 +7934,7 @@ static void Brw_PutFormToCreateAFolder (const char FileNameToShow[NAME_MAX + 1])
    Lay_StartRoundFrame (NULL,Txt_Create_folder,NULL,NULL);
    sprintf (Gbl.Alert.Txt,Txt_You_can_create_a_new_folder_inside_the_folder_X,
 	    FileNameToShow);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Folder *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">"
@@ -7973,7 +7973,7 @@ static void Brw_PutFormToUploadFilesUsingDropzone (const char *FileNameToShow)
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_upload_new_files_to_the_folder_X,
 	    FileNameToShow);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Form to upload files using the library Dropzone.js *****/
    // Use min-height:125px; or other number to stablish the height?
@@ -8034,7 +8034,7 @@ static void Brw_PutFormToUploadOneFileClassic (const char *FileNameToShow)
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_upload_a_new_file_to_the_folder_X,
 	    FileNameToShow);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Form to upload one files using the classic way *****/
    Act_FormStart (Brw_ActUploadFileClassic[Gbl.FileBrowser.Type]);
@@ -8076,7 +8076,7 @@ static void Brw_PutFormToPasteAFileOrFolder (const char *FileNameToShow)
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_make_a_file_copy_to_the_folder_X,
 	    FileNameToShow);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Send button and end frame *****/
    Lay_EndRoundFrameWithButton (Lay_CREATE_BUTTON,Txt_Paste);
@@ -8111,7 +8111,7 @@ static void Brw_PutFormToCreateALink (const char *FileNameToShow)
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_create_a_new_link_inside_the_folder_X,
 	    FileNameToShow);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** URL *****/
    fprintf (Gbl.F.Out,"<table>"
@@ -8198,7 +8198,7 @@ void Brw_RecFolderFileBrowser (void)
 	       Fil_RemoveTree (Path);
                sprintf (Gbl.Alert.Txt,Txt_Can_not_create_the_folder_X_because_it_would_exceed_the_disk_quota,
                         Gbl.FileBrowser.NewFilFolLnkName);
-               Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+               Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	      }
 	    else
               {
@@ -8219,7 +8219,7 @@ void Brw_RecFolderFileBrowser (void)
                                       Gbl.FileBrowser.FilFolLnkName,FileNameToShow);
 	       sprintf (Gbl.Alert.Txt,Txt_The_folder_X_has_been_created_inside_the_folder_Y,
 		        Gbl.FileBrowser.NewFilFolLnkName,FileNameToShow);
-               Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+               Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
               }
 	   }
          else
@@ -8229,7 +8229,7 @@ void Brw_RecFolderFileBrowser (void)
 	       case EEXIST:
                   sprintf (Gbl.Alert.Txt,Txt_Can_not_create_the_folder_X_because_there_is_already_a_folder_or_a_file_with_that_name,
 		   	   Gbl.FileBrowser.NewFilFolLnkName);
-                  Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+                  Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	          break;
 	       case EACCES:
 	          Lay_ShowErrorAndExit ("Write forbidden.");
@@ -8241,7 +8241,7 @@ void Brw_RecFolderFileBrowser (void)
 	   }
         }
       else	// Folder name not valid
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
       Lay_ShowErrorAndExit (Txt_You_can_not_create_folders_here);	// It's difficult, but not impossible that a user sees this message
@@ -8307,7 +8307,7 @@ void Brw_RenFolderFileBrowser (void)
 	             Lay_ShowErrorAndExit ("Can not rename folder.");
 	             break;
 	         }
-               Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+               Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	      }
             else				// Success
               {
@@ -8335,7 +8335,7 @@ void Brw_RenFolderFileBrowser (void)
 	       sprintf (Gbl.Alert.Txt,Txt_The_folder_name_X_has_changed_to_Y,
                         Gbl.FileBrowser.FilFolLnkName,
                         Gbl.FileBrowser.NewFilFolLnkName);
-               Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+               Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
               }
 
            }
@@ -8343,11 +8343,11 @@ void Brw_RenFolderFileBrowser (void)
            {
 	    sprintf (Gbl.Alert.Txt,Txt_The_folder_name_X_has_not_changed,
                      Gbl.FileBrowser.FilFolLnkName);
-            Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
            }
         }
       else	// Folder name not valid
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
       Lay_ShowErrorAndExit (Txt_You_can_not_rename_this_folder);
@@ -8394,7 +8394,7 @@ void Brw_RcvFileInFileBrwClassic (void)
   {
    /***** Receive file and show feedback message *****/
    if (!Brw_RcvFileInFileBrw (Brw_CLASSIC_UPLOAD))
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 
    /***** Show again file browser *****/
    Brw_ShowAgainFileBrowserOrWorks ();
@@ -8523,7 +8523,7 @@ static bool Brw_RcvFileInFileBrw (Brw_UploadType_t UploadType)
 			      sprintf (Gbl.Alert.Txt,Txt_The_file_X_has_been_placed_inside_the_folder_Y,
 			               Gbl.FileBrowser.NewFilFolLnkName,
 			               FileNameToShow);
-			      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+			      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
                              }
 			   UploadSucessful = true;
 
@@ -8665,7 +8665,7 @@ void Brw_RecLinkFileBrowser (void)
 	      {
 	       sprintf (Gbl.Alert.Txt,Txt_Can_not_create_the_link_X_because_there_is_already_a_folder_or_a_link_with_that_name,
 			FileName);
-	       Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	       Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	      }
 	    else	// URL file does not exist
 	      {
@@ -8686,7 +8686,7 @@ void Brw_RecLinkFileBrowser (void)
 		     Fil_RemoveTree (Path);
 		     sprintf (Gbl.Alert.Txt,Txt_Can_not_create_the_link_X_because_it_would_exceed_the_disk_quota,
 			      FileName);
-		     Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		     Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 		    }
 		  else
 		    {
@@ -8707,7 +8707,7 @@ void Brw_RecLinkFileBrowser (void)
 					    Gbl.FileBrowser.FilFolLnkName,FileNameToShow);
 		     sprintf (Gbl.Alert.Txt,Txt_The_link_X_has_been_placed_inside_the_folder_Y,
 			      FileName,FileNameToShow);
-		     Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+		     Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
 		     FileMetadata.FilCod = FilCod;
 		     Brw_GetFileMetadataByCod (&FileMetadata);
@@ -8745,7 +8745,7 @@ void Brw_RecLinkFileBrowser (void)
 	   }
 	}
       else	// Link URL not valid
-	 Lay_ShowAlert (Lay_WARNING,Txt_UPLOAD_FILE_Invalid_link);
+	 Ale_ShowAlert (Ale_WARNING,Txt_UPLOAD_FILE_Invalid_link);
      }
    else
       Lay_ShowErrorAndExit (Txt_You_can_not_create_links_here);	// It's difficult, but not impossible that a user sees this message
@@ -8862,7 +8862,7 @@ void Brw_SetDocumentAsVisible (void)
                           Gbl.FileBrowser.FilFolLnkName,FileNameToShow);
    sprintf (Gbl.Alert.Txt,Txt_FILE_FOLDER_OR_LINK_X_is_now_visible,
             FileNameToShow);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show again the file browser *****/
    Brw_ShowAgainFileBrowserOrWorks ();
@@ -8894,7 +8894,7 @@ void Brw_SetDocumentAsHidden (void)
                           Gbl.FileBrowser.FileType,
                           Gbl.FileBrowser.FilFolLnkName,FileNameToShow);
    sprintf (Gbl.Alert.Txt,Txt_FILE_FOLDER_OR_LINK_X_is_now_hidden,FileNameToShow);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show again the file browser *****/
    Brw_ShowAgainFileBrowserOrWorks ();
@@ -9377,7 +9377,7 @@ void Brw_ShowFileMetadata (void)
 	    break;
 	}
 
-      Lay_ShowAlert (Lay_WARNING,Txt_The_file_of_folder_no_longer_exists_or_is_now_hidden);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_file_of_folder_no_longer_exists_or_is_now_hidden);
      }
 
    /***** Show again the file browser *****/
@@ -9536,7 +9536,7 @@ void Brw_DownloadFile (void)
 	    break;
 	}
 
-      Lay_ShowAlert (Lay_WARNING,Txt_The_file_of_folder_no_longer_exists_or_is_now_hidden);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_file_of_folder_no_longer_exists_or_is_now_hidden);
 
       /***** Show again the file browser *****/
       Brw_ShowAgainFileBrowserOrWorks ();
@@ -9854,14 +9854,14 @@ void Brw_ChgFileMetadata (void)
       /***** Write message of confirmation *****/
       sprintf (Gbl.Alert.Txt,Txt_The_properties_of_file_X_have_been_saved,
                Gbl.FileBrowser.FilFolLnkName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
      {
       /***** Write message of error *****/
       sprintf (Gbl.Alert.Txt,Txt_You_dont_have_permission_to_change_the_properties_of_file_X,
                Gbl.FileBrowser.FilFolLnkName);
-      Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
      }
 
    /***** Show again the file browser *****/
@@ -11089,7 +11089,7 @@ void Brw_RemoveUsrWorksInCrs (struct UsrData *UsrDat,struct Course *Crs,Cns_Quie
      {
       sprintf (Gbl.Alert.Txt,Txt_Works_of_X_in_Y_removed,
                UsrDat->FullName,Crs->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
   }
 
@@ -11132,7 +11132,7 @@ void Brw_RemoveUsrWorksInAllCrss (struct UsrData *UsrDat,Cns_QuietOrVerbose_t Qu
      {
       sprintf (Gbl.Alert.Txt,Txt_The_works_of_X_have_been_removed_in_a_total_of_Y_of_his_her_Z_courses,
                UsrDat->FullName,NumCrssWorksRemoved,(unsigned) NumRows);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
   }
 
@@ -11653,7 +11653,7 @@ void Brw_RemoveOldFilesBriefcase (void)
 	       Txt_Files_removed  ,Removed.NumFiles,
 	       Txt_Links_removed  ,Removed.NumLinks,
 	       Txt_Folders_removed,Removed.NumFolds);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show again the file browser *****/
diff --git a/swad_follow.c b/swad_follow.c
index c86dea10..5ea87cba 100644
--- a/swad_follow.c
+++ b/swad_follow.c
@@ -164,7 +164,7 @@ void Fol_SuggestUsrsToFollowMainZone (void)
       Lay_EndRoundFrameTable ();
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_No_user_to_whom_you_can_follow_Try_again_later);
+      Ale_ShowAlert (Ale_INFO,Txt_No_user_to_whom_you_can_follow_Try_again_later);
 
    /***** Free structure that stores the query result *****/
    DB_FreeMySQLResult (&mysql_res);
@@ -653,7 +653,7 @@ void Fol_ListFollowing (void)
       if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat))
 	 Fol_ListFollowingUsr (&Gbl.Usrs.Other.UsrDat);
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else				// If user not specified, view my profile
       Fol_ListFollowingUsr (&Gbl.Usrs.Me.UsrDat);
@@ -717,7 +717,7 @@ static void Fol_ListFollowingUsr (struct UsrData *UsrDat)
       DB_FreeMySQLResult (&mysql_res);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -736,7 +736,7 @@ void Fol_ListFollowers (void)
       if (Usr_ChkUsrCodAndGetAllUsrDataFromUsrCod (&Gbl.Usrs.Other.UsrDat))
 	 Fol_ListFollowersUsr (&Gbl.Usrs.Other.UsrDat);
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else				// If user not specified, view my profile
       Fol_ListFollowersUsr (&Gbl.Usrs.Me.UsrDat);
@@ -806,7 +806,7 @@ static void Fol_ListFollowersUsr (struct UsrData *UsrDat)
 			      Gbl.Usrs.Me.UsrDat.UsrCod);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -1031,11 +1031,11 @@ void Fol_FollowUsr1 (void)
                                               (Ntf_Status_t) (NotifyByEmail ? Ntf_STATUS_BIT_EMAIL :
                                         	                              0));
 	   }
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
      }
    else
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_User_not_found_or_you_do_not_have_permission_);
      }
   }
@@ -1044,16 +1044,16 @@ void Fol_FollowUsr2 (void)
   {
    extern const char *Txt_User_not_found_or_you_do_not_have_permission_;
 
-   if (Gbl.Alert.Type == Lay_SUCCESS)
+   if (Gbl.Alert.Type == Ale_SUCCESS)
       /***** Show user's profile again *****/
       if (!Prf_ShowUserProfile (&Gbl.Usrs.Other.UsrDat))
 	{
-	 Gbl.Alert.Type = Lay_WARNING;
+	 Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,"%s",Txt_User_not_found_or_you_do_not_have_permission_);
 	}
 
-   if (Gbl.Alert.Type != Lay_SUCCESS)
-      Lay_ShowPendingAlert ();
+   if (Gbl.Alert.Type != Ale_SUCCESS)
+      Ale_ShowPendingAlert ();
   }
 
 /*****************************************************************************/
@@ -1079,11 +1079,11 @@ void Fol_UnfollowUsr1 (void)
                   Gbl.Usrs.Other.UsrDat.UsrCod);
 	 DB_QueryREPLACE (Query,"can not unfollow user");
         }
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
      }
    else
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_User_not_found_or_you_do_not_have_permission_);
      }
   }
@@ -1091,7 +1091,7 @@ void Fol_UnfollowUsr1 (void)
 void Fol_UnfollowUsr2 (void)
   {
    /***** Get user to be unfollowed *****/
-   if (Gbl.Alert.Type == Lay_SUCCESS)
+   if (Gbl.Alert.Type == Ale_SUCCESS)
      {
       /***** Show user's profile again *****/
       if (!Prf_ShowUserProfile (&Gbl.Usrs.Other.UsrDat))	// I can not view user's profile
@@ -1101,7 +1101,7 @@ void Fol_UnfollowUsr2 (void)
 	 Fol_ListFollowingUsr (&Gbl.Usrs.Me.UsrDat);		// List users I follow
      }
    else
-      Lay_ShowPendingAlert ();
+      Ale_ShowPendingAlert ();
   }
 
 /*****************************************************************************/
diff --git a/swad_forum.c b/swad_forum.c
index 1b490983..45699add 100644
--- a/swad_forum.c
+++ b/swad_forum.c
@@ -298,7 +298,7 @@ static unsigned For_GetNumPstsInThr (long ThrCod);
 static unsigned For_GetNumMyPstInThr (long ThrCod);
 static time_t For_GetThrReadTime (long ThrCod);
 static void For_DeleteThrFromReadThrs (long ThrCod);
-static void For_ShowPostsOfAThread (Lay_AlertType_t AlertType,const char *Message);
+static void For_ShowPostsOfAThread (Ale_AlertType_t AlertType,const char *Message);
 static void For_PutIconNewPost (void);
 static void For_PutAllHiddenParamsNewPost (void);
 
@@ -346,7 +346,7 @@ static unsigned For_GetNumOfPostsInThrNewerThan (long ThrCod,const char *Time);
 static void For_WriteNumThrsAndPsts (unsigned NumThrs,unsigned NumThrsWithNewPosts,unsigned NumPosts);
 static void For_WriteNumberOfThrs (unsigned NumThrs,unsigned NumThrsWithNewPosts);
 static void For_ShowForumThreadsHighlightingOneThread (long ThrCodHighlighted,
-                                                       Lay_AlertType_t AlertType,const char *Message);
+                                                       Ale_AlertType_t AlertType,const char *Message);
 static void For_PutIconNewThread (void);
 static void For_PutAllHiddenParamsNewThread (void);
 static unsigned For_GetNumThrsInForum (struct Forum *Forum);
@@ -393,10 +393,10 @@ void For_EnablePost (void)
 
    /***** Show threads again *****/
    For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-                                              Lay_SUCCESS,NULL);
+                                              Ale_SUCCESS,NULL);
 
    /***** Show the posts again *****/
-   For_ShowPostsOfAThread (Lay_SUCCESS,Txt_Post_unbanned);
+   For_ShowPostsOfAThread (Ale_SUCCESS,Txt_Post_unbanned);
   }
 
 /*****************************************************************************/
@@ -421,10 +421,10 @@ void For_DisablePost (void)
 
       /***** Show threads again *****/
       For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						 Lay_SUCCESS,NULL);
+						 Ale_SUCCESS,NULL);
 
       /***** Show the posts again *****/
-      For_ShowPostsOfAThread (Lay_SUCCESS,Txt_Post_banned);
+      For_ShowPostsOfAThread (Ale_SUCCESS,Txt_Post_banned);
      }
    else
       Lay_ShowErrorAndExit ("The post to be banned no longer exists.");
@@ -968,7 +968,7 @@ void For_RemoveUsrFromReadThrs (long UsrCod)
 /************************ Show posts in a thread *****************************/
 /*****************************************************************************/
 
-static void For_ShowPostsOfAThread (Lay_AlertType_t AlertType,const char *Message)
+static void For_ShowPostsOfAThread (Ale_AlertType_t AlertType,const char *Message)
   {
    extern const char *Hlp_SOCIAL_Forums_posts;
    extern const char *Txt_Thread;
@@ -1004,7 +1004,7 @@ static void For_ShowPostsOfAThread (Lay_AlertType_t AlertType,const char *Messag
    fprintf (Gbl.F.Out,"<section id=\"%s\">",For_ID_FORUM_POSTS_SECTION);
    if (Message)
       if (Message[0])
-         Lay_ShowAlert (AlertType,Message);
+         Ale_ShowAlert (AlertType,Message);
 
    /***** Start frame *****/
    sprintf (FrameTitle,"%s: %s",Txt_Thread,Thr.Subject);
@@ -2451,7 +2451,7 @@ void For_ShowForumTheads (void)
    For_ShowForumList ();
 
    /***** Show forum threads with no one highlighted *****/
-   For_ShowForumThreadsHighlightingOneThread (-1L,Lay_SUCCESS,NULL);
+   For_ShowForumThreadsHighlightingOneThread (-1L,Ale_SUCCESS,NULL);
   }
 
 /*****************************************************************************/
@@ -2459,7 +2459,7 @@ void For_ShowForumTheads (void)
 /*****************************************************************************/
 
 static void For_ShowForumThreadsHighlightingOneThread (long ThrCodHighlighted,
-                                                       Lay_AlertType_t AlertType,const char *Message)
+                                                       Ale_AlertType_t AlertType,const char *Message)
   {
    extern const char *Hlp_SOCIAL_Forums_threads;
    extern const char *Txt_Forum;
@@ -2541,7 +2541,7 @@ static void For_ShowForumThreadsHighlightingOneThread (long ThrCodHighlighted,
    fprintf (Gbl.F.Out,"<section id=\"%s\">",For_ID_FORUM_THREADS_SECTION);
    if (Message)
       if (Message[0])
-         Lay_ShowAlert (AlertType,Message);
+         Ale_ShowAlert (AlertType,Message);
 
    /***** Start frame for threads of this forum *****/
    sprintf (FrameTitle,"%s: %s",Txt_Forum,ForumName);
@@ -3559,10 +3559,10 @@ void For_ShowThreadPosts (void)
 
    /***** Show threads again *****/
    For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-                                              Lay_SUCCESS,NULL);
+                                              Ale_SUCCESS,NULL);
 
    /***** Show the posts of that thread *****/
-   For_ShowPostsOfAThread (Lay_SUCCESS,NULL);
+   For_ShowPostsOfAThread (Ale_SUCCESS,NULL);
   }
 
 /*****************************************************************************/
@@ -3987,10 +3987,10 @@ void For_ReceiveForumPost (void)
 
    /***** Show threads again *****/
    For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-                                              Lay_SUCCESS,NULL);
+                                              Ale_SUCCESS,NULL);
 
    /***** Show again the posts of this thread of the forum *****/
-   For_ShowPostsOfAThread (Lay_SUCCESS,Txt_Post_sent);
+   For_ShowPostsOfAThread (Ale_SUCCESS,Txt_Post_sent);
   }
 
 /*****************************************************************************/
@@ -4073,14 +4073,14 @@ void For_RemovePost (void)
    if (ThreadDeleted)
       /***** Show the remaining threads *****/
       For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-                                                 Lay_SUCCESS,Txt_Post_and_thread_removed);
+                                                 Ale_SUCCESS,Txt_Post_and_thread_removed);
    else
      {
       /***** Show threads again *****/
       For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						 Lay_SUCCESS,NULL);
+						 Ale_SUCCESS,NULL);
       /***** Show the remaining posts *****/
-      For_ShowPostsOfAThread (Lay_SUCCESS,Txt_Post_removed);
+      For_ShowPostsOfAThread (Ale_SUCCESS,Txt_Post_removed);
      }
   }
 
@@ -4112,7 +4112,7 @@ void For_RequestRemoveThread (void)
    else
       sprintf (Gbl.Alert.Txt,"%s",
                Txt_Do_you_really_want_to_remove_the_entire_thread);
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
 			   For_ActionsDelThrFor[Gbl.Forum.ForumSelected.Type],
 			   For_ID_FORUM_THREADS_SECTION,
 			   For_PutAllHiddenParamsRemThread,
@@ -4121,7 +4121,7 @@ void For_RequestRemoveThread (void)
 
    /***** Show the threads again *****/
    For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-					      Lay_SUCCESS,NULL);
+					      Ale_SUCCESS,NULL);
   }
 
 static void For_PutAllHiddenParamsRemThread (void)
@@ -4165,11 +4165,11 @@ void For_RemoveThread (void)
       	{
          sprintf (Gbl.Alert.Txt,Txt_Thread_X_removed,Subject);
          For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-	                                            Lay_SUCCESS,Gbl.Alert.Txt);
+	                                            Ale_SUCCESS,Gbl.Alert.Txt);
       	}
       else
 	 For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-	                                            Lay_SUCCESS,Txt_Thread_removed);
+	                                            Ale_SUCCESS,Txt_Thread_removed);
      }
    else
       Lay_ShowErrorAndExit ("You can not remove threads in this forum.");
@@ -4202,11 +4202,11 @@ void For_CutThread (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_Thread_X_marked_to_be_moved,Subject);
       For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						 Lay_SUCCESS,Gbl.Alert.Txt);
+						 Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
       For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						 Lay_SUCCESS,Txt_Thread_marked_to_be_moved);
+						 Ale_SUCCESS,Txt_Thread_marked_to_be_moved);
 
   }
 
@@ -4240,11 +4240,11 @@ void For_PasteThread (void)
          sprintf (Gbl.Alert.Txt,Txt_The_thread_X_is_already_in_this_forum,
                   Subject);
          For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						    Lay_WARNING,Gbl.Alert.Txt);
+						    Ale_WARNING,Gbl.Alert.Txt);
         }
       else
          For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						    Lay_WARNING,Txt_The_thread_is_already_in_this_forum);
+						    Ale_WARNING,Txt_The_thread_is_already_in_this_forum);
      }
    else
      {
@@ -4260,11 +4260,11 @@ void For_PasteThread (void)
          sprintf (Gbl.Alert.Txt,Txt_Thread_X_moved_to_this_forum,
                   Subject);
          For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						    Lay_SUCCESS,Gbl.Alert.Txt);
+						    Ale_SUCCESS,Gbl.Alert.Txt);
 	}
       else
          For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.ForumSelected.ThrCod,
-						    Lay_SUCCESS,Txt_Thread_moved_to_this_forum);
+						    Ale_SUCCESS,Txt_Thread_moved_to_this_forum);
      }
   }
 
diff --git a/swad_global.c b/swad_global.c
index 6afecf6c..3efc7e89 100644
--- a/swad_global.c
+++ b/swad_global.c
@@ -120,7 +120,7 @@ void Gbl_InitializeGlobals (void)
    Gbl.Form.Num = -1;		// Number of form. It's increased by 1 at the begin of each form
    Gbl.Form.Inside = false;	// Set to true inside a form to avoid nested forms
 
-   Gbl.Alert.Type = Lay_NONE;	// Used to show alert in a posteriori function
+   Gbl.Alert.Type = Ale_NONE;	// Used to show alert in a posteriori function
 
    Gbl.DB.DatabaseIsOpen = false;
    Gbl.DB.LockedTables = false;
diff --git a/swad_global.h b/swad_global.h
index bbc0ec78..e16bd1eb 100644
--- a/swad_global.h
+++ b/swad_global.h
@@ -32,6 +32,7 @@
 #include <sys/time.h>		// For tz
 #include <mysql/mysql.h>	// To access MySQL databases
 
+#include "swad_alert.h"
 #include "swad_agenda.h"
 #include "swad_assignment.h"
 #include "swad_attendance.h"
@@ -102,8 +103,8 @@ struct Globals
      } Form;
    struct
      {
-      Lay_AlertType_t Type;
-      char Txt[Lay_MAX_BYTES_ALERT + 1];
+      Ale_AlertType_t Type;
+      char Txt[Ale_MAX_BYTES_ALERT + 1];
      } Alert;			// Used in a posteriori function to write success / warning message
    struct
      {
diff --git a/swad_group.c b/swad_group.c
index 97d35433..751da418 100644
--- a/swad_group.c
+++ b/swad_group.c
@@ -63,11 +63,11 @@ extern struct Globals Gbl;
 /***************************** Internal prototypes ***************************/
 /*****************************************************************************/
 
-static void Grp_ReqEditGroupsInternal (Lay_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes,
-                                       Lay_AlertType_t AlertTypeGroups,const char *MessageGroups);
+static void Grp_ReqEditGroupsInternal (Ale_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes,
+                                       Ale_AlertType_t AlertTypeGroups,const char *MessageGroups);
 static void Grp_ReqEditGroupsInternal0 (void);
-static void Grp_ReqEditGroupsInternal1 (Lay_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes);
-static void Grp_ReqEditGroupsInternal2 (Lay_AlertType_t AlertTypeGroups,const char *MessageGroups);
+static void Grp_ReqEditGroupsInternal1 (Ale_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes);
+static void Grp_ReqEditGroupsInternal2 (Ale_AlertType_t AlertTypeGroups,const char *MessageGroups);
 
 static void Grp_EditGroupTypes (void);
 static void Grp_EditGroups (void);
@@ -181,12 +181,12 @@ void Grp_WriteNamesOfSelectedGrps (void)
 
 void Grp_ReqEditGroups (void)
   {
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
-                              Lay_INFO,NULL);
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
+                              Ale_INFO,NULL);
   }
 
-static void Grp_ReqEditGroupsInternal (Lay_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes,
-                                       Lay_AlertType_t AlertTypeGroups,const char *MessageGroups)
+static void Grp_ReqEditGroupsInternal (Ale_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes,
+                                       Ale_AlertType_t AlertTypeGroups,const char *MessageGroups)
   {
    Grp_ReqEditGroupsInternal0 ();
    Grp_ReqEditGroupsInternal1 (AlertTypeGroupTypes,MessageGroupTypes);
@@ -199,7 +199,7 @@ static void Grp_ReqEditGroupsInternal0 (void)
    fprintf (Gbl.F.Out,"<section id=\"%s\">",Grp_SECTION_GROUP_TYPES);
   }
 
-static void Grp_ReqEditGroupsInternal1 (Lay_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes)
+static void Grp_ReqEditGroupsInternal1 (Ale_AlertType_t AlertTypeGroupTypes,const char *MessageGroupTypes)
   {
    /***** Get list of groups types and groups in this course *****/
    Grp_GetListGrpTypesAndGrpsInThisCrs (Grp_ALL_GROUP_TYPES);
@@ -207,7 +207,7 @@ static void Grp_ReqEditGroupsInternal1 (Lay_AlertType_t AlertTypeGroupTypes,cons
    /***** Show optional alert *****/
    if (MessageGroupTypes)
       if (MessageGroupTypes[0])
-         Lay_ShowAlert (AlertTypeGroupTypes,MessageGroupTypes);
+         Ale_ShowAlert (AlertTypeGroupTypes,MessageGroupTypes);
 
    /***** Put form to edit group types *****/
    Grp_EditGroupTypes ();
@@ -219,12 +219,12 @@ static void Grp_ReqEditGroupsInternal1 (Lay_AlertType_t AlertTypeGroupTypes,cons
    fprintf (Gbl.F.Out,"<section id=\"%s\">",Grp_SECTION_GROUPS);
   }
 
-static void Grp_ReqEditGroupsInternal2 (Lay_AlertType_t AlertTypeGroups,const char *MessageGroups)
+static void Grp_ReqEditGroupsInternal2 (Ale_AlertType_t AlertTypeGroups,const char *MessageGroups)
   {
    /***** Show optional alert *****/
    if (MessageGroups)
       if (MessageGroups[0])
-         Lay_ShowAlert (AlertTypeGroups,MessageGroups);
+         Ale_ShowAlert (AlertTypeGroups,MessageGroups);
 
    /***** Put form to edit groups *****/
    if (Gbl.CurrentCrs.Grps.GrpTypes.Num) // If there are group types...
@@ -262,7 +262,7 @@ static void Grp_EditGroupTypes (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_There_are_no_types_of_group_in_the_course_X,
                Gbl.CurrentCrs.Crs.ShrtName);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
 
    /***** End frame *****/
@@ -293,7 +293,7 @@ static void Grp_EditGroups (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_No_groups_have_been_created_in_the_course_X,
                Gbl.CurrentCrs.Crs.ShrtName);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
 
    /***** End frame *****/
@@ -607,12 +607,12 @@ void Grp_ChangeMyGrps (void)
    if (MySelectionIsValid)
      {
       if (Grp_ChangeMyGrpsAtomically (&LstGrpsIWant))
-	 Lay_ShowAlert (Lay_SUCCESS,Txt_The_requested_group_changes_were_successful);
+	 Ale_ShowAlert (Ale_SUCCESS,Txt_The_requested_group_changes_were_successful);
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_There_has_been_no_change_in_groups);
+	 Ale_ShowAlert (Ale_WARNING,Txt_There_has_been_no_change_in_groups);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_In_a_type_of_group_with_single_enrolment_students_can_not_be_registered_in_more_than_one_group);
+      Ale_ShowAlert (Ale_WARNING,Txt_In_a_type_of_group_with_single_enrolment_students_can_not_be_registered_in_more_than_one_group);
 
    /***** Free memory with the list of groups which I want to belong to *****/
    Grp_FreeListCodGrp (&LstGrpsIWant);
@@ -653,12 +653,12 @@ void Grp_ChangeOtherUsrGrps (void)
    if (SelectionIsValid)
      {
       if (Grp_ChangeGrpsOtherUsrAtomically (&LstGrpsUsrWants))
-	 Lay_ShowAlert (Lay_SUCCESS,Txt_The_requested_group_changes_were_successful);
+	 Ale_ShowAlert (Ale_SUCCESS,Txt_The_requested_group_changes_were_successful);
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_There_has_been_no_change_in_groups);
+	 Ale_ShowAlert (Ale_WARNING,Txt_There_has_been_no_change_in_groups);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_In_a_type_of_group_with_single_enrolment_students_can_not_be_registered_in_more_than_one_group);
+      Ale_ShowAlert (Ale_WARNING,Txt_In_a_type_of_group_with_single_enrolment_students_can_not_be_registered_in_more_than_one_group);
 
    /***** Free memory with the list of groups to/from which register/remove users *****/
    Grp_FreeListCodGrp (&LstGrpsUsrWants);
@@ -1025,7 +1025,7 @@ void Grp_RegisterUsrIntoGroups (struct UsrData *UsrDat,struct ListCodGrps *LstGr
                      Grp_RemoveUsrFromGroup (UsrDat->UsrCod,LstGrpsHeBelongs.GrpCods[NumGrpHeBelongs]);
                      sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_from_the_group_of_type_Y_to_which_it_belonged,
 			      UsrDat->FullName,Gbl.CurrentCrs.Grps.GrpTypes.LstGrpTypes[NumGrpTyp].GrpTypName);
-                     Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+                     Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
                     }
 
                if (!AlreadyRegisteredInGrp)	// If the user does not belong to the selected group
@@ -1034,7 +1034,7 @@ void Grp_RegisterUsrIntoGroups (struct UsrData *UsrDat,struct ListCodGrps *LstGr
                   sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_enroled_in_the_group_of_type_Y_Z,
 		           UsrDat->FullName,Gbl.CurrentCrs.Grps.GrpTypes.LstGrpTypes[NumGrpTyp].GrpTypName,
                            Gbl.CurrentCrs.Grps.GrpTypes.LstGrpTypes[NumGrpTyp].LstGrps[NumGrpThisType].GrpName);
-                  Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+                  Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
                  }
 
                break;	// Once we know the type of a selected group, it's not necessary to check the rest of types
@@ -1088,7 +1088,7 @@ unsigned Grp_RemoveUsrFromGroups (struct UsrData *UsrDat,struct ListCodGrps *Lst
    else	// NumGrpsHeIsRemoved > 1
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_from_Y_groups,
                UsrDat->FullName,NumGrpsHeIsRemoved);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Free the list of groups of this type to which the user belonged *****/
    Grp_FreeListCodGrp (&LstGrpsHeBelongs);
@@ -1119,7 +1119,7 @@ void Grp_RemUsrFromAllGrpsInCrs (struct UsrData *UsrDat,struct Course *Crs,Cns_Q
      {
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_from_all_groups_of_the_course_Y,
                UsrDat->FullName,Crs->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
   }
 
@@ -1142,7 +1142,7 @@ void Grp_RemUsrFromAllGrps (struct UsrData *UsrDat,Cns_QuietOrVerbose_t QuietOrV
      {
       sprintf (Gbl.Alert.Txt,Txt_THE_USER_X_has_been_removed_from_all_groups_in_all_courses,
                UsrDat->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
   }
 
@@ -1701,7 +1701,7 @@ void Grp_ShowLstGrpsToChgMyGrps (bool ShowWarningsToStudents)
      {
       sprintf (Gbl.Alert.Txt,Txt_No_groups_have_been_created_in_the_course_X,
                Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
       /***** Button to create group *****/
       if (ICanEdit)
@@ -1757,7 +1757,7 @@ static void Grp_ShowWarningToStdsToChangeGrps (void)
 			   GrpTyp->MultipleEnrolment ? Txt_You_have_to_register_compulsorily_at_least_in_one_group_of_type_X :
 						       Txt_You_have_to_register_compulsorily_in_one_group_of_type_X,
 			   GrpTyp->GrpTypName);
-		  Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		  Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 		 }
 	       else
 		 {
@@ -1765,7 +1765,7 @@ static void Grp_ShowWarningToStdsToChangeGrps (void)
 			   GrpTyp->MultipleEnrolment ? Txt_You_can_register_voluntarily_in_one_or_more_groups_of_type_X :
 						       Txt_You_can_register_voluntarily_in_one_group_of_type_X,
 			   GrpTyp->GrpTypName);
-		  Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+		  Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 		 }
 	      }
      }
@@ -3257,7 +3257,7 @@ void Grp_RecFormNewGrpTyp (void)
    extern const char *Txt_The_type_of_group_X_already_exists;
    extern const char *Txt_Created_new_type_of_group_X;
    extern const char *Txt_You_must_specify_the_name_of_the_new_type_of_group;
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters from form *****/
    /* Get the name of group type */
@@ -3279,7 +3279,7 @@ void Grp_RecFormNewGrpTyp (void)
       /***** If name of group type was in database... *****/
       if (Grp_CheckIfGroupTypeNameExists (Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName,-1L))
         {
-         AlertType = Lay_WARNING;
+         AlertType = Ale_WARNING;
          sprintf (Gbl.Alert.Txt,Txt_The_type_of_group_X_already_exists,
                   Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName);
         }
@@ -3287,20 +3287,20 @@ void Grp_RecFormNewGrpTyp (void)
 	{
          Grp_CreateGroupType ();
 
-         AlertType = Lay_SUCCESS;
+         AlertType = Ale_SUCCESS;
 	 sprintf (Gbl.Alert.Txt,Txt_Created_new_type_of_group_X,
 		  Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName);
 	}
      }
    else	// If there is not a group type name
      {
-      AlertType = Lay_WARNING;
+      AlertType = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_name_of_the_new_type_of_group);
      }
 
    /***** Show the form again *****/
    Grp_ReqEditGroupsInternal (AlertType,Gbl.Alert.Txt,
-                              Lay_INFO,NULL);
+                              Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -3326,7 +3326,7 @@ void Grp_RecFormNewGrp (void)
    extern const char *Txt_The_group_X_already_exists;
    extern const char *Txt_Created_new_group_X;
    extern const char *Txt_You_must_specify_the_name_of_the_new_group;
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters from form *****/
    if ((Gbl.CurrentCrs.Grps.GrpTyp.GrpTypCod = Grp_GetParamGrpTypCod ()) > 0) // Group type valid
@@ -3347,7 +3347,7 @@ void Grp_RecFormNewGrp (void)
          /***** If name of group was in database... *****/
          if (Grp_CheckIfGroupNameExists (Gbl.CurrentCrs.Grps.GrpTyp.GrpTypCod,Gbl.CurrentCrs.Grps.GrpName,-1L))
            {
-            AlertType = Lay_WARNING;
+            AlertType = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_group_X_already_exists,
                      Gbl.CurrentCrs.Grps.GrpName);
            }
@@ -3356,25 +3356,25 @@ void Grp_RecFormNewGrp (void)
             Grp_CreateGroup ();
 
 	    /* Write success message */
-            AlertType = Lay_SUCCESS;
+            AlertType = Ale_SUCCESS;
 	    sprintf (Gbl.Alert.Txt,Txt_Created_new_group_X,
 		     Gbl.CurrentCrs.Grps.GrpName);
            }
         }
       else	// If there is not a group name
         {
-         AlertType = Lay_ERROR;
+         AlertType = Ale_ERROR;
          sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_name_of_the_new_group);
         }
      }
    else	// Invalid group type
      {
-      AlertType = Lay_ERROR;
+      AlertType = Ale_ERROR;
       sprintf (Gbl.Alert.Txt,"%s","Wrong type of group.");
      }
 
    /***** Show the form again *****/
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
                               AlertType,Gbl.Alert.Txt);
   }
 
@@ -3508,14 +3508,14 @@ static void Grp_AskConfirmRemGrpTypWithGrps (unsigned NumGrps)
    else
       sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_type_of_group_X_Y_groups_,
                Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName,NumGrps);
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            ActRemGrpTyp,Grp_SECTION_GROUP_TYPES,
                            Grp_PutParamRemGrpTyp,
 			   Lay_REMOVE_BUTTON,Txt_Remove_type_of_group);
 
    /***** Show the form to edit group types and groups again *****/
-   Grp_ReqEditGroupsInternal1 (Lay_INFO,NULL);
-   Grp_ReqEditGroupsInternal2 (Lay_INFO,NULL);
+   Grp_ReqEditGroupsInternal1 (Ale_INFO,NULL);
+   Grp_ReqEditGroupsInternal2 (Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -3549,7 +3549,7 @@ static void Grp_AskConfirmRemGrp (void)
 
    /***** Show the form to edit group types again *****/
    Grp_ReqEditGroupsInternal0 ();
-   Grp_ReqEditGroupsInternal1 (Lay_INFO,NULL);
+   Grp_ReqEditGroupsInternal1 (Ale_INFO,NULL);
 
    /***** Show question and button to remove group *****/
    if (NumStds == 0)
@@ -3561,12 +3561,12 @@ static void Grp_AskConfirmRemGrp (void)
    else
       sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_group_X_Y_students_,
                GrpDat.GrpName,NumStds);
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            ActRemGrp,Grp_SECTION_GROUPS,Grp_PutParamRemGrp,
 			   Lay_REMOVE_BUTTON,Txt_Remove_group);
 
    /***** Show the form to edit groups again *****/
-   Grp_ReqEditGroupsInternal2 (Lay_INFO,NULL);
+   Grp_ReqEditGroupsInternal2 (Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -3658,8 +3658,8 @@ static void Grp_RemoveGroupTypeCompletely (void)
             Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName);
 
    /***** Show the form again *****/
-   Grp_ReqEditGroupsInternal (Lay_SUCCESS,Gbl.Alert.Txt,
-                              Lay_INFO,NULL);
+   Grp_ReqEditGroupsInternal (Ale_SUCCESS,Gbl.Alert.Txt,
+                              Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -3707,8 +3707,8 @@ static void Grp_RemoveGroupCompletely (void)
    sprintf (Gbl.Alert.Txt,Txt_Group_X_removed,GrpDat.GrpName);
 
    /***** Show the form again *****/
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
-                              Lay_SUCCESS,Gbl.Alert.Txt);
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
+                              Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3739,8 +3739,8 @@ void Grp_OpenGroup (void)
 
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.Open = true;
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
-                              Lay_SUCCESS,Gbl.Alert.Txt);
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
+                              Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3771,8 +3771,8 @@ void Grp_CloseGroup (void)
 
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.Open = false;
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
-                              Lay_SUCCESS,Gbl.Alert.Txt);
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
+                              Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3804,8 +3804,8 @@ void Grp_EnableFileZonesGrp (void)
 
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.FileZones = true;
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
-                              Lay_SUCCESS,Gbl.Alert.Txt);
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
+                              Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3837,8 +3837,8 @@ void Grp_DisableFileZonesGrp (void)
 
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.FileZones = false;
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
-                              Lay_SUCCESS,Gbl.Alert.Txt);
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
+                              Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3852,7 +3852,7 @@ void Grp_ChangeGroupType (void)
    long NewGrpTypCod;
    struct GroupData GrpDat;
    char Query[512];
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters from form *****/
    /* Get group code */
@@ -3869,7 +3869,7 @@ void Grp_ChangeGroupType (void)
    /***** If group was in database... *****/
    if (Grp_CheckIfGroupNameExists (NewGrpTypCod,GrpDat.GrpName,-1L))
      {
-      AlertType = Lay_WARNING;
+      AlertType = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_The_group_X_already_exists,GrpDat.GrpName);
      }
    else
@@ -3880,14 +3880,14 @@ void Grp_ChangeGroupType (void)
       DB_QueryUPDATE (Query,"can not update the type of a group");
 
       /***** Write message to show the change made *****/
-      AlertType = Lay_SUCCESS;
+      AlertType = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,Txt_The_type_of_group_of_the_group_X_has_changed,
                GrpDat.GrpName);
      }
 
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.GrpTyp.GrpTypCod = NewGrpTypCod;
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
                               AlertType,Gbl.Alert.Txt);
   }
 
@@ -3902,7 +3902,7 @@ void Grp_ChangeMandatGrpTyp (void)
    extern const char *Txt_The_enrolment_of_students_into_groups_of_type_X_is_now_voluntary;
    char Query[1024];
    bool NewMandatoryEnrolment;
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters of the form *****/
    /* Get the código of type of group */
@@ -3919,7 +3919,7 @@ void Grp_ChangeMandatGrpTyp (void)
           (this happens when return is pressed without changes in the form) *****/
    if (Gbl.CurrentCrs.Grps.GrpTyp.MandatoryEnrolment == NewMandatoryEnrolment)
      {
-      AlertType = Lay_INFO;
+      AlertType = Ale_INFO;
       sprintf (Gbl.Alert.Txt,Txt_The_type_of_enrolment_of_the_type_of_group_X_has_not_changed,
                Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName);
      }
@@ -3933,7 +3933,7 @@ void Grp_ChangeMandatGrpTyp (void)
       DB_QueryUPDATE (Query,"can not update enrolment type of a type of group");
 
       /***** Write message to show the change made *****/
-      AlertType = Lay_SUCCESS;
+      AlertType = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,
                NewMandatoryEnrolment ? Txt_The_enrolment_of_students_into_groups_of_type_X_is_now_mandatory :
                                        Txt_The_enrolment_of_students_into_groups_of_type_X_is_now_voluntary,
@@ -3943,7 +3943,7 @@ void Grp_ChangeMandatGrpTyp (void)
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.GrpTyp.MandatoryEnrolment = NewMandatoryEnrolment;
    Grp_ReqEditGroupsInternal (AlertType,Gbl.Alert.Txt,
-                              Lay_INFO,NULL);
+                              Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -3957,7 +3957,7 @@ void Grp_ChangeMultiGrpTyp (void)
    extern const char *Txt_Now_each_student_can_only_belong_to_a_group_of_type_X;
    char Query[1024];
    bool NewMultipleEnrolment;
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters from the form *****/
    /* Get the code of type of group */
@@ -3974,7 +3974,7 @@ void Grp_ChangeMultiGrpTyp (void)
    	  (this happends when return is pressed without changes) *****/
    if (Gbl.CurrentCrs.Grps.GrpTyp.MultipleEnrolment == NewMultipleEnrolment)
      {
-      AlertType = Lay_INFO;
+      AlertType = Ale_INFO;
       sprintf (Gbl.Alert.Txt,Txt_The_type_of_enrolment_of_the_type_of_group_X_has_not_changed,
                Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName);
      }
@@ -3989,7 +3989,7 @@ void Grp_ChangeMultiGrpTyp (void)
       DB_QueryUPDATE (Query,"can not update enrolment type of a type of group");
 
       /***** Write message to show the change made *****/
-      AlertType = Lay_SUCCESS;
+      AlertType = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,
                NewMultipleEnrolment ? Txt_Now_each_student_can_belong_to_multiple_groups_of_type_X :
                                       Txt_Now_each_student_can_only_belong_to_a_group_of_type_X,
@@ -3999,7 +3999,7 @@ void Grp_ChangeMultiGrpTyp (void)
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.GrpTyp.MultipleEnrolment = NewMultipleEnrolment;
    Grp_ReqEditGroupsInternal (AlertType,Gbl.Alert.Txt,
-                              Lay_INFO,NULL);
+                              Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -4037,8 +4037,8 @@ void Grp_ChangeOpenTimeGrpTyp (void)
    sprintf (Gbl.Alert.Txt,"%s",Txt_The_date_time_of_opening_of_groups_has_changed);
 
    /***** Show the form again *****/
-   Grp_ReqEditGroupsInternal (Lay_SUCCESS,Gbl.Alert.Txt,
-                              Lay_INFO,NULL);
+   Grp_ReqEditGroupsInternal (Ale_SUCCESS,Gbl.Alert.Txt,
+                              Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -4053,7 +4053,7 @@ void Grp_ChangeMaxStdsGrp (void)
    struct GroupData GrpDat;
    char Query[1024];
    unsigned NewMaxStds;
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters of the form *****/
    /* Get group code */
@@ -4074,7 +4074,7 @@ void Grp_ChangeMaxStdsGrp (void)
    /***** Check if the old maximum of students equals the new one (this happens when user press return without change the form) *****/
    if (GrpDat.MaxStudents == NewMaxStds)
      {
-      AlertType = Lay_INFO;
+      AlertType = Ale_INFO;
       sprintf (Gbl.Alert.Txt,Txt_The_maximum_number_of_students_in_the_group_X_has_not_changed,
                GrpDat.GrpName);
      }
@@ -4086,7 +4086,7 @@ void Grp_ChangeMaxStdsGrp (void)
       DB_QueryUPDATE (Query,"can not update the maximum number of students in a group");
 
       /***** Write message to show the change made *****/
-      AlertType = Lay_SUCCESS;
+      AlertType = Ale_SUCCESS;
       if (NewMaxStds > Grp_MAX_STUDENTS_IN_A_GROUP)
          sprintf (Gbl.Alert.Txt,Txt_The_group_X_now_has_no_limit_of_students,
                   GrpDat.GrpName);
@@ -4097,7 +4097,7 @@ void Grp_ChangeMaxStdsGrp (void)
 
    /***** Show the form again *****/
    Gbl.CurrentCrs.Grps.MaxStudents = NewMaxStds;
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
                               AlertType,Gbl.Alert.Txt);
   }
 
@@ -4140,7 +4140,7 @@ void Grp_RenameGroupType (void)
    extern const char *Txt_The_name_of_the_type_of_group_X_has_not_changed;
    char Query[128 + Grp_MAX_BYTES_GROUP_TYPE_NAME];
    char NewNameGrpTyp[Grp_MAX_BYTES_GROUP_TYPE_NAME + 1];
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters from form *****/
    /* Get the code of the group type */
@@ -4156,7 +4156,7 @@ void Grp_RenameGroupType (void)
    /***** Check if new name is empty *****/
    if (!NewNameGrpTyp[0])
      {
-      AlertType = Lay_WARNING;
+      AlertType = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_type_of_group_X_empty,
                Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName);
      }
@@ -4168,7 +4168,7 @@ void Grp_RenameGroupType (void)
          /***** If group type was in database... *****/
          if (Grp_CheckIfGroupTypeNameExists (NewNameGrpTyp,Gbl.CurrentCrs.Grps.GrpTyp.GrpTypCod))
            {
-	    AlertType = Lay_WARNING;
+	    AlertType = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_type_of_group_X_already_exists,
                      NewNameGrpTyp);
            }
@@ -4182,14 +4182,14 @@ void Grp_RenameGroupType (void)
             DB_QueryUPDATE (Query,"can not update the type of a group");
 
             /***** Write message to show the change made *****/
-	    AlertType = Lay_SUCCESS;
+	    AlertType = Ale_SUCCESS;
             sprintf (Gbl.Alert.Txt,Txt_The_type_of_group_X_has_been_renamed_as_Y,
                      Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName,NewNameGrpTyp);
            }
         }
       else	// The same name
         {
-	 AlertType = Lay_INFO;
+	 AlertType = Ale_INFO;
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_type_of_group_X_has_not_changed,
                   NewNameGrpTyp);
         }
@@ -4199,7 +4199,7 @@ void Grp_RenameGroupType (void)
    Str_Copy (Gbl.CurrentCrs.Grps.GrpTyp.GrpTypName,NewNameGrpTyp,
              Grp_MAX_BYTES_GROUP_TYPE_NAME);
    Grp_ReqEditGroupsInternal (AlertType,Gbl.Alert.Txt,
-                              Lay_INFO,NULL);
+                              Ale_INFO,NULL);
   }
 
 /*****************************************************************************/
@@ -4215,7 +4215,7 @@ void Grp_RenameGroup (void)
    struct GroupData GrpDat;
    char Query[128 + Grp_MAX_BYTES_GROUP_NAME];
    char NewNameGrp[Grp_MAX_BYTES_GROUP_NAME + 1];
-   Lay_AlertType_t AlertType;
+   Ale_AlertType_t AlertType;
 
    /***** Get parameters from form *****/
    /* Get the code of the group */
@@ -4232,7 +4232,7 @@ void Grp_RenameGroup (void)
    /***** Check if new name is empty *****/
    if (!NewNameGrp[0])
      {
-      AlertType = Lay_WARNING;
+      AlertType = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_group_X_empty,
                GrpDat.GrpName);
      }
@@ -4244,7 +4244,7 @@ void Grp_RenameGroup (void)
          /***** If group was in database... *****/
          if (Grp_CheckIfGroupNameExists (GrpDat.GrpTypCod,NewNameGrp,Gbl.CurrentCrs.Grps.GrpCod))
            {
-	    AlertType = Lay_WARNING;
+	    AlertType = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_group_X_already_exists,NewNameGrp);
            }
          else
@@ -4255,14 +4255,14 @@ void Grp_RenameGroup (void)
             DB_QueryUPDATE (Query,"can not update the name of a group");
 
             /***** Write message to show the change made *****/
-	    AlertType = Lay_SUCCESS;
+	    AlertType = Ale_SUCCESS;
             sprintf (Gbl.Alert.Txt,Txt_The_group_X_has_been_renamed_as_Y,
                      GrpDat.GrpName,NewNameGrp);
            }
         }
       else	// The same name
         {
-	 AlertType = Lay_INFO;
+	 AlertType = Ale_INFO;
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_group_X_has_not_changed,
                   NewNameGrp);
         }
@@ -4271,7 +4271,7 @@ void Grp_RenameGroup (void)
    /***** Show the form again *****/
    Str_Copy (Gbl.CurrentCrs.Grps.GrpName,NewNameGrp,
              Grp_MAX_BYTES_GROUP_NAME);
-   Grp_ReqEditGroupsInternal (Lay_INFO,NULL,
+   Grp_ReqEditGroupsInternal (Ale_INFO,NULL,
                               AlertType,Gbl.Alert.Txt);
   }
 
diff --git a/swad_help.c b/swad_help.c
index 61d9ce4e..b4d13c79 100644
--- a/swad_help.c
+++ b/swad_help.c
@@ -111,7 +111,7 @@ void Hlp_ShowHelpWhatWouldYouLikeToDo (void)
 	       Txt_You_are_not_enroled_in_any_course[Gbl.Usrs.Me.UsrDat.Sex],
 	       Txt_You_can_search_for_courses_select_them_and_request_your_enrolment_in_them,
 	       Txt_If_you_can_not_find_your_institution_your_centre_your_degree_or_your_courses_you_can_create_them);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
 
    /***** Contextual buttons *****/
diff --git a/swad_holiday.c b/swad_holiday.c
index 7b2b1ef6..553addb8 100644
--- a/swad_holiday.c
+++ b/swad_holiday.c
@@ -172,7 +172,7 @@ void Hld_SeeHolidays (void)
 	 Lay_EndTable ();
 	}
       else	// No holidays created in the current institution
-	 Lay_ShowAlert (Lay_INFO,Txt_No_holidays);
+	 Ale_ShowAlert (Ale_INFO,Txt_No_holidays);
 
       /***** Button to create centre *****/
       if (Gbl.Usrs.Me.LoggedRole >= Rol_INS_ADM)	// Institution admin or system admin
@@ -651,7 +651,7 @@ void Hld_RemoveHoliday1 (void)
    DB_QueryDELETE (Query,"can not remove a holiday");
 
    /***** Write message to show the change made *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_Holiday_X_removed,Hld.Name);
 
   }
@@ -659,7 +659,7 @@ void Hld_RemoveHoliday1 (void)
 void Hld_RemoveHoliday2 (void)
   {
    /***** Show success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Hld_EditHolidays ();
@@ -701,7 +701,7 @@ void Hld_ChangeHolidayPlace1 (void)
              Plc_MAX_BYTES_PLACE_FULL_NAME);
 
    /***** Write message to show the change made *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_The_place_of_the_holiday_X_has_changed_to_Y,
             Hld->Name,NewPlace.FullName);
   }
@@ -709,7 +709,7 @@ void Hld_ChangeHolidayPlace1 (void)
 void Hld_ChangeHolidayPlace2 (void)
   {
    /***** Show success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Hld_EditHolidays ();
@@ -745,7 +745,7 @@ void Hld_ChangeHolidayType1 (void)
    DB_QueryUPDATE (Query,"can not update the type of a holiday");
 
    /***** Write message to show the change made *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_The_type_of_the_holiday_X_has_changed,
             Hld->Name);
   }
@@ -753,7 +753,7 @@ void Hld_ChangeHolidayType1 (void)
 void Hld_ChangeHolidayType2 (void)
   {
    /***** Show success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Hld_EditHolidays ();
@@ -844,7 +844,7 @@ static void Hld_ChangeDate (Hld_StartOrEndDate_t StartOrEndDate)
    Dat_AssignDate (PtrDate,&NewDate);
 
    /***** Write message to show the change made *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    Dat_ConvDateToDateStr (&NewDate,StrDate);
    sprintf (Gbl.Alert.Txt,Txt_The_date_of_the_holiday_X_has_changed_to_Y,
             Hld->Name,StrDate);
@@ -857,7 +857,7 @@ static void Hld_ChangeDate (Hld_StartOrEndDate_t StartOrEndDate)
 void Hld_ChangeDate2 (void)
   {
    /***** Show success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Hld_EditHolidays ();
@@ -892,7 +892,7 @@ void Hld_RenameHoliday1 (void)
    /***** Check if new name is empty *****/
    if (!NewHldName[0])
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_holiday_X_empty,
                Hld->Name);
      }
@@ -910,13 +910,13 @@ void Hld_RenameHoliday1 (void)
 		   Hld_MAX_BYTES_HOLIDAY_NAME);
 
 	 /***** Write message to show the change made *****/
-         Gbl.Alert.Type = Lay_SUCCESS;
+         Gbl.Alert.Type = Ale_SUCCESS;
 	 sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_holiday_X_has_changed_to_Y,
 		  Hld->Name,NewHldName);
         }
       else	// The same name
         {
-         Gbl.Alert.Type = Lay_INFO;
+         Gbl.Alert.Type = Ale_INFO;
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_holiday_X_has_not_changed,
                  Hld->Name);
         }
@@ -926,7 +926,7 @@ void Hld_RenameHoliday1 (void)
 void Hld_RenameHoliday2 (void)
   {
    /***** Write error/success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Hld_EditHolidays ();
@@ -1147,13 +1147,13 @@ void Hld_RecFormNewHoliday1 (void)
       Hld_CreateHoliday (Hld);
 
       /* Success message */
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,Txt_Created_new_holiday_X,Hld->Name);
      }
    else	// If there is not a holiday name
      {
       /* Error message */
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_must_specify_the_name_of_the_new_holiday);
      }
   }
@@ -1161,7 +1161,7 @@ void Hld_RecFormNewHoliday1 (void)
 void Hld_RecFormNewHoliday2 (void)
   {
    /***** Write error/success message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Hld_EditHolidays ();
diff --git a/swad_image.c b/swad_image.c
index 2e80e9d7..e80c2122 100644
--- a/swad_image.c
+++ b/swad_image.c
@@ -527,7 +527,7 @@ void Img_MoveImageToDefinitiveDirectory (struct Image *Image)
 
    /***** Move file *****/
    if (rename (FileNameImgTmp,FileNameImg))	// Fail
-      Lay_ShowAlert (Lay_ERROR,"Can not move file.");
+      Ale_ShowAlert (Ale_ERROR,"Can not move file.");
    else						// Success
       Image->Status = Img_FILE_MOVED;
   }
@@ -606,7 +606,7 @@ void Img_ShowImage (struct Image *Image,
       fprintf (Gbl.F.Out,"</div>");
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_Image_not_found);
+      Ale_ShowAlert (Ale_WARNING,Txt_Image_not_found);
   }
 
 /*****************************************************************************/
diff --git a/swad_indicator.c b/swad_indicator.c
index e894bc82..6d878b2b 100644
--- a/swad_indicator.c
+++ b/swad_indicator.c
@@ -521,7 +521,7 @@ static void Ind_PutButtonToConfirmIWantToSeeBigList (unsigned NumCrss)
    /***** Show warning *****/
    sprintf (Gbl.Alert.Txt,Txt_The_list_of_X_courses_is_too_large_to_be_displayed,
             NumCrss);
-   Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 
    /***** Put form to confirm that I want to see the big list *****/
    Act_FormStart (Gbl.Action.Act);
diff --git a/swad_info.c b/swad_info.c
index d7610d8b..398f7888 100644
--- a/swad_info.c
+++ b/swad_info.c
@@ -442,7 +442,7 @@ void Inf_ShowInfo (void)
 			   ICanEdit ? Inf_PutIconToEditInfo :
 				      NULL,
 		           Help[Gbl.CurrentCrs.Info.Type]);
-      Lay_ShowAlert (Lay_INFO,Txt_No_information);
+      Ale_ShowAlert (Ale_INFO,Txt_No_information);
       if (ICanEdit)
 	 Inf_PutButtonToEditInfo ();
       Lay_EndRoundFrame ();
@@ -586,7 +586,7 @@ void Inf_WriteMsgYouMustReadInfo (void)
    Lay_StartRoundFrame (NULL,Txt_Required_reading,NULL,NULL);
 
    /***** Write message *****/
-   Lay_ShowAlert (Lay_WARNING,Txt_You_should_read_the_following_information);
+   Ale_ShowAlert (Ale_WARNING,Txt_You_should_read_the_following_information);
 
    /***** Write every information I must read *****/
    fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">"
@@ -631,7 +631,7 @@ void Inf_ChangeForceReadInfo (void)
    Inf_SetForceReadIntoDB (MustBeRead);
 
    /***** Write message of success *****/
-   Lay_ShowAlert (Lay_SUCCESS,
+   Ale_ShowAlert (Ale_SUCCESS,
                   MustBeRead ? Txt_Students_now_are_required_to_read_this_information :
                                Txt_Students_are_no_longer_obliged_to_read_this_information);
 
@@ -656,7 +656,7 @@ void Inf_ChangeIHaveReadInfo (void)
    Inf_SetIHaveReadIntoDB (IHaveRead);
 
    /***** Write message of success *****/
-   Lay_ShowAlert (Lay_SUCCESS,
+   Ale_ShowAlert (Ale_SUCCESS,
                   IHaveRead ? Txt_You_have_confirmed_that_you_have_read_this_information :
                               Txt_You_have_eliminated_the_confirmation_that_you_have_read_this_information);
 
@@ -2230,11 +2230,11 @@ void Inf_ReceiveURLInfo (void)
       /***** Write message *****/
       sprintf (Gbl.Alert.Txt,Txt_The_URL_X_has_been_updated,
                Gbl.CurrentCrs.Info.URL);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
       URLIsOK = true;
      }
    else
-      Lay_ShowAlert (Lay_ERROR,"Error when saving URL to file.");
+      Ale_ShowAlert (Ale_ERROR,"Error when saving URL to file.");
 
    if (URLIsOK)
      {
@@ -2299,7 +2299,7 @@ void Inf_ReceivePagInfo (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_The_file_type_is_X_and_should_be_HTML_or_ZIP,
                MIMEType);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
    else
      {
@@ -2315,11 +2315,11 @@ void Inf_ReceivePagInfo (void)
          sprintf (PathRelFileHTML,"%s/index.html",PathRelDirHTML);
          if (Fil_EndReceptionOfFile (PathRelFileHTML,Param))
            {
-            Lay_ShowAlert (Lay_SUCCESS,Txt_The_HTML_file_has_been_received_successfully);
+            Ale_ShowAlert (Ale_SUCCESS,Txt_The_HTML_file_has_been_received_successfully);
             FileIsOK = true;
            }
          else
-            Lay_ShowAlert (Lay_WARNING,"Error uploading file.");
+            Ale_ShowAlert (Ale_WARNING,"Error uploading file.");
         }
       else if (Str_FileIs (SourceFileName,"zip")) // .zip file
         {
@@ -2331,7 +2331,7 @@ void Inf_ReceivePagInfo (void)
 
          if (Fil_EndReceptionOfFile (PathRelFileZIP,Param))
            {
-            Lay_ShowAlert (Lay_SUCCESS,Txt_The_ZIP_file_has_been_received_successfully);
+            Ale_ShowAlert (Ale_SUCCESS,Txt_The_ZIP_file_has_been_received_successfully);
 
             /* Uncompress ZIP */
             sprintf (StrUnzip,"unzip -qq -o %s -d %s",
@@ -2342,8 +2342,8 @@ void Inf_ReceivePagInfo (void)
                sprintf (PathRelFileHTML,"%s/index.html",PathRelDirHTML);
                if (Fil_CheckIfPathExists (PathRelFileHTML))
                  {
-                  Lay_ShowAlert (Lay_SUCCESS,Txt_The_ZIP_file_has_been_unzipped_successfully);
-                  Lay_ShowAlert (Lay_SUCCESS,Txt_Found_an_index_html_file);
+                  Ale_ShowAlert (Ale_SUCCESS,Txt_The_ZIP_file_has_been_unzipped_successfully);
+                  Ale_ShowAlert (Ale_SUCCESS,Txt_Found_an_index_html_file);
                   FileIsOK = true;
                  }
 	       else
@@ -2351,22 +2351,22 @@ void Inf_ReceivePagInfo (void)
 	          sprintf (PathRelFileHTML,"%s/index.htm",PathRelDirHTML);
 	          if (Fil_CheckIfPathExists (PathRelFileHTML))
                     {
-                     Lay_ShowAlert (Lay_SUCCESS,Txt_The_ZIP_file_has_been_unzipped_successfully);
-                     Lay_ShowAlert (Lay_SUCCESS,Txt_Found_an_index_htm_file);
+                     Ale_ShowAlert (Ale_SUCCESS,Txt_The_ZIP_file_has_been_unzipped_successfully);
+                     Ale_ShowAlert (Ale_SUCCESS,Txt_Found_an_index_htm_file);
                      FileIsOK = true;
                     }
 	          else
-                     Lay_ShowAlert (Lay_WARNING,Txt_No_file_index_html_index_htm_found_within_the_ZIP_file);
+                     Ale_ShowAlert (Ale_WARNING,Txt_No_file_index_html_index_htm_found_within_the_ZIP_file);
 	         }
 	      }
             else
                Lay_ShowErrorAndExit ("Can not unzip file.");
            }
          else
-            Lay_ShowAlert (Lay_WARNING,"Error uploading file.");
+            Ale_ShowAlert (Ale_WARNING,"Error uploading file.");
         }
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_The_file_type_should_be_HTML_or_ZIP);
+         Ale_ShowAlert (Ale_WARNING,Txt_The_file_type_should_be_HTML_or_ZIP);
      }
 
    if (FileIsOK)
@@ -2395,7 +2395,7 @@ void Inf_EditorCourseInfo (void)
   {
    extern const char *Txt_The_integrated_editor_is_not_yet_available;
 
-   Lay_ShowAlert (Lay_WARNING,Txt_The_integrated_editor_is_not_yet_available);
+   Ale_ShowAlert (Ale_WARNING,Txt_The_integrated_editor_is_not_yet_available);
 
    /***** Show again the form to select and send course info *****/
    Inf_FormsToSelSendInfo ();
@@ -2409,7 +2409,7 @@ void Inf_EditorTeachingGuide (void)
   {
    extern const char *Txt_The_integrated_editor_is_not_yet_available;
 
-   Lay_ShowAlert (Lay_WARNING,Txt_The_integrated_editor_is_not_yet_available);
+   Ale_ShowAlert (Ale_WARNING,Txt_The_integrated_editor_is_not_yet_available);
 
    /***** Show again the form to select and send course info *****/
    Inf_FormsToSelSendInfo ();
@@ -2423,7 +2423,7 @@ void Inf_EditorBibliography (void)
   {
    extern const char *Txt_The_integrated_editor_is_not_yet_available;
 
-   Lay_ShowAlert (Lay_WARNING,Txt_The_integrated_editor_is_not_yet_available);
+   Ale_ShowAlert (Ale_WARNING,Txt_The_integrated_editor_is_not_yet_available);
 
    /***** Show again the form to select and send course info *****/
    Inf_FormsToSelSendInfo ();
@@ -2437,7 +2437,7 @@ void Inf_EditorFAQ (void)
   {
    extern const char *Txt_The_integrated_editor_is_not_yet_available;
 
-   Lay_ShowAlert (Lay_WARNING,Txt_The_integrated_editor_is_not_yet_available);
+   Ale_ShowAlert (Ale_WARNING,Txt_The_integrated_editor_is_not_yet_available);
 
    /***** Show again the form to select and send course info *****/
    Inf_FormsToSelSendInfo ();
@@ -2451,7 +2451,7 @@ void Inf_EditorLinks (void)
   {
    extern const char *Txt_The_integrated_editor_is_not_yet_available;
 
-   Lay_ShowAlert (Lay_WARNING,Txt_The_integrated_editor_is_not_yet_available);
+   Ale_ShowAlert (Ale_WARNING,Txt_The_integrated_editor_is_not_yet_available);
 
    /***** Show again the form to select and send course info *****/
    Inf_FormsToSelSendInfo ();
@@ -2465,7 +2465,7 @@ void Inf_EditorAssessment (void)
   {
    extern const char *Txt_The_integrated_editor_is_not_yet_available;
 
-   Lay_ShowAlert (Lay_WARNING,Txt_The_integrated_editor_is_not_yet_available);
+   Ale_ShowAlert (Ale_WARNING,Txt_The_integrated_editor_is_not_yet_available);
 
    /***** Show again the form to select and send course info *****/
    Inf_FormsToSelSendInfo ();
diff --git a/swad_institution.c b/swad_institution.c
index df2206f0..b3ada627 100644
--- a/swad_institution.c
+++ b/swad_institution.c
@@ -200,7 +200,7 @@ void Ins_SeeInsWithPendingCtrs (void)
       Lay_EndRoundFrameTable ();
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_There_are_no_institutions_with_requests_for_centres_to_be_confirmed);
+      Ale_ShowAlert (Ale_INFO,Txt_There_are_no_institutions_with_requests_for_centres_to_be_confirmed);
 
    /***** Free structure that stores the query result *****/
    DB_FreeMySQLResult (&mysql_res);
@@ -695,7 +695,7 @@ static void Ins_ListInstitutions (void)
       Lay_EndTable ();
      }
    else	// No insrtitutions created in the current country
-      Lay_ShowAlert (Lay_INFO,Txt_No_institutions);
+      Ale_ShowAlert (Ale_INFO,Txt_No_institutions);
 
    /***** Button to create institution *****/
    if (Ins_CheckIfICanCreateInstitutions ())
@@ -1692,7 +1692,7 @@ void Ins_RemoveInstitution (void)
    else if (Ins.NumCtrs ||
             Ins.NumUsrsWhoClaimToBelongToIns ||
             Ins.NumUsrs)	// Institution has centres or users ==> don't remove
-      Lay_ShowAlert (Lay_WARNING,Txt_To_remove_an_institution_you_must_first_remove_all_centres_and_users_in_the_institution);
+      Ale_ShowAlert (Ale_WARNING,Txt_To_remove_an_institution_you_must_first_remove_all_centres_and_users_in_the_institution);
    else	// Institution has no users ==> remove it
      {
       /***** Remove all the threads and posts in forums of the institution *****/
@@ -1719,7 +1719,7 @@ void Ins_RemoveInstitution (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_Institution_X_removed,
                Ins.FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1797,7 +1797,7 @@ static void Ins_RenameInstitution (struct Instit *Ins,Cns_ShrtOrFullName_t ShrtO
    /***** Check if new name is empty *****/
    if (!NewInsName[0])
      {
-      Gbl.Alert.Type = Lay_WARNING;
+      Gbl.Alert.Type = Ale_WARNING;
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_institution_X_empty,
                CurrentInsName);
      }
@@ -1809,7 +1809,7 @@ static void Ins_RenameInstitution (struct Instit *Ins,Cns_ShrtOrFullName_t ShrtO
          /***** If institution was in database... *****/
          if (Ins_CheckIfInsNameExistsInCty (ParamName,NewInsName,Ins->InsCod,Gbl.CurrentCty.Cty.CtyCod))
            {
-            Gbl.Alert.Type = Lay_WARNING;
+            Gbl.Alert.Type = Ale_WARNING;
             sprintf (Gbl.Alert.Txt,Txt_The_institution_X_already_exists,
                      NewInsName);
            }
@@ -1819,7 +1819,7 @@ static void Ins_RenameInstitution (struct Instit *Ins,Cns_ShrtOrFullName_t ShrtO
             Ins_UpdateInsNameDB (Ins->InsCod,FieldName,NewInsName);
 
             /* Create message to show the change made */
-            Gbl.Alert.Type = Lay_SUCCESS;
+            Gbl.Alert.Type = Ale_SUCCESS;
             sprintf (Gbl.Alert.Txt,Txt_The_institution_X_has_been_renamed_as_Y,
                      CurrentInsName,NewInsName);
 
@@ -1830,7 +1830,7 @@ static void Ins_RenameInstitution (struct Instit *Ins,Cns_ShrtOrFullName_t ShrtO
         }
       else	// The same name
 	{
-         Gbl.Alert.Type = Lay_INFO;
+         Gbl.Alert.Type = Ale_INFO;
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_institution_X_has_not_changed,
                   CurrentInsName);
 	}
@@ -1888,13 +1888,13 @@ void Ins_ChangeInsCtyInConfig (void)
       /***** Check if it already exists an institution with the same name in the new country *****/
       if (Ins_CheckIfInsNameExistsInCty ("ShortName",Gbl.CurrentIns.Ins.ShrtName,-1L,NewCty.CtyCod))
 	{
-         Gbl.Alert.Type = Lay_WARNING;
+         Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_institution_X_already_exists,
 		  Gbl.CurrentIns.Ins.ShrtName);
 	}
       else if (Ins_CheckIfInsNameExistsInCty ("FullName",Gbl.CurrentIns.Ins.FullName,-1L,NewCty.CtyCod))
 	{
-         Gbl.Alert.Type = Lay_WARNING;
+         Gbl.Alert.Type = Ale_WARNING;
 	 sprintf (Gbl.Alert.Txt,Txt_The_institution_X_already_exists,
 		  Gbl.CurrentIns.Ins.FullName);
 	}
@@ -1909,7 +1909,7 @@ void Ins_ChangeInsCtyInConfig (void)
 	 Hie_InitHierarchy ();
 
 	 /***** Write message to show the change made *****/
-         Gbl.Alert.Type = Lay_SUCCESS;
+         Gbl.Alert.Type = Ale_SUCCESS;
 	 sprintf (Gbl.Alert.Txt,Txt_The_country_of_the_institution_X_has_changed_to_Y,
 		  Gbl.CurrentIns.Ins.FullName,NewCty.Name[Gbl.Prefs.Language]);
 	}
@@ -1923,7 +1923,7 @@ void Ins_ChangeInsCtyInConfig (void)
 void Ins_ContEditAfterChgInsInConfig (void)
   {
    /***** Write success / warning message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Show the form again *****/
    Ins_ShowConfiguration ();
@@ -1973,12 +1973,12 @@ void Ins_ChangeInsWWW (void)
 
       /***** Write message to show the change made
 	     and put button to go to institution changed *****/
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,NewWWW);
       Ins_ShowAlertAndButtonToGoToIns ();
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Ins_EditInstitutions ();
@@ -2004,10 +2004,10 @@ void Ins_ChangeInsWWWInConfig (void)
 
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,NewWWW);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Ins_ShowConfiguration ();
@@ -2064,7 +2064,7 @@ void Ins_ChangeInsStatus (void)
 
    /***** Write message to show the change made
 	  and put button to go to institution changed *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_The_status_of_the_institution_X_has_changed,
             Gbl.Inss.EditingIns.ShrtName);
    Ins_ShowAlertAndButtonToGoToIns ();
@@ -2103,13 +2103,13 @@ static void Ins_ShowAlertAndButtonToGoToIns (void)
      {
       /***** Alert with button to go to degree *****/
       sprintf (Gbl.Title,Txt_Go_to_X,Gbl.Inss.EditingIns.ShrtName);
-      Lay_ShowAlertAndButton (Gbl.Alert.Type,Gbl.Alert.Txt,
+      Ale_ShowAlertAndButton (Gbl.Alert.Type,Gbl.Alert.Txt,
                               ActSeeCtr,NULL,Ins_PutParamGoToIns,
                               Lay_CONFIRM_BUTTON,Gbl.Title);
      }
    else
       /***** Alert *****/
-      Lay_ShowAlert (Gbl.Alert.Type,Gbl.Alert.Txt);
+      Ale_ShowAlert (Gbl.Alert.Type,Gbl.Alert.Txt);
   }
 
 static void Ins_PutParamGoToIns (void)
@@ -2345,22 +2345,22 @@ static void Ins_RecFormRequestOrCreateIns (unsigned Status)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_institution_X_already_exists,
                      Gbl.Inss.EditingIns.ShrtName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else if (Ins_CheckIfInsNameExistsInCty ("FullName",Gbl.Inss.EditingIns.FullName,-1L,Gbl.CurrentCty.Cty.CtyCod))
            {
             sprintf (Gbl.Alert.Txt,Txt_The_institution_X_already_exists,
                      Gbl.Inss.EditingIns.FullName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else	// Add new institution to database
             Ins_CreateInstitution (Status);
         }
       else	// If there is not a web
-         Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_web_address_of_the_new_institution);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_web_address_of_the_new_institution);
      }
    else	// If there is not a institution name
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_institution);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_institution);
 
    /***** Show the form again *****/
    Ins_EditInstitutions ();
@@ -2394,7 +2394,7 @@ static void Ins_CreateInstitution (unsigned Status)
 
    /***** Write message to show the change made
 	  and put button to go to institution created *****/
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,Txt_Created_new_institution_X,
             Gbl.Inss.EditingIns.FullName);
    Ins_ShowAlertAndButtonToGoToIns ();
diff --git a/swad_layout.c b/swad_layout.c
index e8ea6542..3212229e 100644
--- a/swad_layout.c
+++ b/swad_layout.c
@@ -66,17 +66,6 @@ extern struct Globals Gbl;
 /***************************** Private constants *****************************/
 /*****************************************************************************/
 
-static const char *Lay_AlertIcons[Lay_NUM_ALERT_TYPES] =
-  {
-   NULL,		// Lay_NONE
-   "info64x64.png",	// Lay_INFO
-   "success64x64.png",	// Lay_SUCCESS
-   "question64x64.gif",	// Lay_QUESTION		animated gif
-   "warning64x64.gif",	// Lay_WARNING		animated gif
-   "error64x64.gif",	// Lay_ERROR		animated gif
-   "copy_on16x16.gif",	// Lay_CLIPBOARD
-  };
-
 /*****************************************************************************/
 /******************************* Private types *******************************/
 /*****************************************************************************/
@@ -106,8 +95,6 @@ static void Lay_WriteTitleAction (void);
 static void Lay_ShowLeftColumn (void);
 static void Lay_ShowRightColumn (void);
 
-static void Lay_PutButton (Lay_Button_t Button,const char *TxtButton);
-
 static void Lay_StartRoundFrameInternal (const char *Width,const char *Title,
                                          void (*FunctionToDrawContextualIcons) (void),
                                          const char *HelpLink,
@@ -1351,7 +1338,7 @@ void Lay_PutIconRemove (void)
 /********************** Put a button to submit a form ************************/
 /*****************************************************************************/
 
-static void Lay_PutButton (Lay_Button_t Button,const char *TxtButton)
+void Lay_PutButton (Lay_Button_t Button,const char *TxtButton)
   {
    if (TxtButton)
       if (TxtButton[0])
@@ -1600,7 +1587,7 @@ void Lay_ShowErrorAndExit (const char *Txt)
 
       /***** Write possible error message *****/
       if (Txt)
-         Lay_ShowAlert (Lay_ERROR,Txt);
+         Ale_ShowAlert (Ale_ERROR,Txt);
 
       /***** Finish the page, except </body> and </html> *****/
       Lay_WriteEndOfPage ();
@@ -1660,89 +1647,6 @@ void Lay_ShowErrorAndExit (const char *Txt)
    exit (0);
   }
 
-/*****************************************************************************/
-/*********************** Show a write-pending alert **************************/
-/*****************************************************************************/
-// Gbl.Alert.Type must be Lay_NONE or any type of alert
-// If Gbl.Alert.Type != Lay_NONE ==> Gbl.Alert.Txt must hold the message
-
-void Lay_ShowPendingAlert (void)
-  {
-   /***** Anything to show? *****/
-   if (Gbl.Alert.Type != Lay_NONE)
-      /***** Show alert *****/
-      Lay_ShowAlert (Gbl.Alert.Type,Gbl.Alert.Txt);
-
-   // Do not be tempted to restore the value of Gbl.Alert.Type to Lay_NONE here,
-   // since it can still be used after calling this function.
-  }
-
-/*****************************************************************************/
-/******************** Show an alert message to the user **********************/
-/*****************************************************************************/
-
-void Lay_ShowAlert (Lay_AlertType_t AlertType,const char *Txt)
-  {
-   if (AlertType != Lay_NONE)
-      Lay_ShowAlertAndButton (AlertType,Txt,
-                              ActUnk,NULL,NULL,Lay_NO_BUTTON,NULL);
-  }
-
-void Lay_ShowAlertAndButton (Lay_AlertType_t AlertType,const char *Txt,
-                             Act_Action_t NextAction,const char *Anchor,
-                             void (*FuncParams) (),
-                             Lay_Button_t Button,const char *TxtButton)
-  {
-   Lay_ShowAlertAndButton1 (AlertType,Txt);
-   Lay_ShowAlertAndButton2 (NextAction,Anchor,FuncParams,Button,TxtButton);
-  }
-
-void Lay_ShowAlertAndButton1 (Lay_AlertType_t AlertType,const char *Txt)
-  {
-   /****** If start of page is not written yet, do it now ******/
-   if (!Gbl.Layout.HTMLStartWritten)
-      Lay_WriteStartOfPage ();
-
-   /***** Start box *****/
-   fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">"
-	              "<div class=\"ALERT\">");
-
-   /***** Write message *****/
-   fprintf (Gbl.F.Out,"<div class=\"ALERT_TXT\""
-		      " style=\"background-image:url('%s/%s'); background-size:20px 20px;\">",
-	    Gbl.Prefs.IconsURL,Lay_AlertIcons[AlertType]);
-   if (Txt)
-      fprintf (Gbl.F.Out,"%s",Txt);
-   fprintf (Gbl.F.Out,"</div>");
-  }
-
-void Lay_ShowAlertAndButton2 (Act_Action_t NextAction,const char *Anchor,
-                              void (*FuncParams) (),
-                              Lay_Button_t Button,const char *TxtButton)
-  {
-   /***** Optional button *****/
-   if (NextAction != ActUnk &&
-       Button != Lay_NO_BUTTON &&
-       TxtButton)
-      if (TxtButton[0])
-	{
-         /* Start form */
-	 Act_FormStartAnchor (NextAction,Anchor);
-	 if (FuncParams)
-	    FuncParams ();
-
-         /* Put button *****/
-	 Lay_PutButton (Button,TxtButton);
-
-         /* End form */
-	 Act_FormEnd ();
-	}
-
-   /***** End box *****/
-   fprintf (Gbl.F.Out,"</div>"
-	              "</div>");
-  }
-
 /*****************************************************************************/
 /***************** Write about zone at the end of the page *******************/
 /*****************************************************************************/
diff --git a/swad_layout.h b/swad_layout.h
index e687f687..02e539f8 100644
--- a/swad_layout.h
+++ b/swad_layout.h
@@ -33,9 +33,6 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Lay_MAX_BYTES_ALERT (16 * 1024 - 1)	// Max. size for alert message
-// Important: the size of alert message must be enough large to store the longest message.
-
 #define Lay_MAX_BYTES_TITLE (4096 - 1)
 
 #define Lay_HIDE_BOTH_COLUMNS	0						// 00
@@ -47,18 +44,6 @@
 /********************************* Public types ******************************/
 /*****************************************************************************/
 
-#define Lay_NUM_ALERT_TYPES 7
-typedef enum
-  {
-   Lay_NONE      = 0,
-   Lay_INFO      = 1,
-   Lay_SUCCESS   = 2,
-   Lay_QUESTION  = 3,
-   Lay_WARNING   = 4,
-   Lay_ERROR     = 5,
-   Lay_CLIPBOARD = 6,
-  } Lay_AlertType_t;
-
 typedef enum
   {
    Lay_NO_BUTTON,
@@ -98,6 +83,7 @@ void Lay_PutIconRemovalNotAllowed (void);
 void Lay_PutIconBRemovalNotAllowed (void);
 void Lay_PutIconRemove (void);
 
+void Lay_PutButton (Lay_Button_t Button,const char *TxtButton);
 void Lay_PutCreateButton (const char *TxtButton);
 void Lay_PutCreateButtonInline (const char *TxtButton);
 void Lay_PutConfirmButton (const char *TxtButton);
@@ -131,16 +117,6 @@ void Lay_StartTableWideMargin (unsigned CellPadding);
 void Lay_EndTable (void);
 
 void Lay_ShowErrorAndExit (const char *Txt);
-void Lay_ShowPendingAlert (void);
-void Lay_ShowAlert (Lay_AlertType_t AlertType,const char *Txt);
-void Lay_ShowAlertAndButton (Lay_AlertType_t AlertType,const char *Txt,
-                             Act_Action_t NextAction,const char *Anchor,
-                             void (*FuncParams) (),
-                             Lay_Button_t Button,const char *TxtButton);
-void Lay_ShowAlertAndButton1 (Lay_AlertType_t AlertType,const char *Txt);
-void Lay_ShowAlertAndButton2 (Act_Action_t NextAction,const char *Anchor,
-                              void (*FuncParams) (),
-                              Lay_Button_t Button,const char *TxtButton);
 
 void Lay_RefreshNotifsAndConnected (void);
 void Lay_RefreshLastClicks (void);
diff --git a/swad_link.c b/swad_link.c
index 6db96f3b..a5be2a1b 100644
--- a/swad_link.c
+++ b/swad_link.c
@@ -107,7 +107,7 @@ void Lnk_SeeLinks (void)
    if (Gbl.Links.Num)	// There are links
       Lnk_WriteListOfLinks ();
    else			// No links created
-      Lay_ShowAlert (Lay_INFO,Txt_No_links);
+      Ale_ShowAlert (Ale_INFO,Txt_No_links);
 
    /***** Button to create link *****/
    if (Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM)
@@ -464,7 +464,7 @@ void Lnk_RemoveLink (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Link_X_removed,
             Lnk.ShrtName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show the form again *****/
    Lnk_EditLinks ();
@@ -538,7 +538,7 @@ static void Lnk_RenameLink (Cns_ShrtOrFullName_t ShrtOrFullName)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_link_X_empty,
                CurrentLnkName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -550,7 +550,7 @@ static void Lnk_RenameLink (Cns_ShrtOrFullName_t ShrtOrFullName)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_link_X_already_exists,
                      NewLnkName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -560,14 +560,14 @@ static void Lnk_RenameLink (Cns_ShrtOrFullName_t ShrtOrFullName)
             /* Write message to show the change made */
             sprintf (Gbl.Alert.Txt,Txt_The_link_X_has_been_renamed_as_Y,
                      CurrentLnkName,NewLnkName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_link_X_has_not_changed,
                   CurrentLnkName);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -638,10 +638,10 @@ void Lnk_ChangeLinkWWW (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_web_address_is_X,
                NewWWW);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-     Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_web_address_empty);
+     Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_web_address_empty);
 
    /***** Show the form again *****/
    Str_Copy (Lnk->WWW,NewWWW,
@@ -773,21 +773,21 @@ void Lnk_RecFormNewLink (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_link_X_already_exists,
                   Lnk->ShrtName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else if (Lnk_CheckIfLinkNameExists ("FullName",Lnk->FullName,-1L))
         {
          sprintf (Gbl.Alert.Txt,Txt_The_link_X_already_exists,
                   Lnk->FullName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else if (!Lnk->WWW[0])
-         Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_URL_of_the_new_link);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_URL_of_the_new_link);
       else	// Add new link to database
          Lnk_CreateLink (Lnk);
      }
    else	// If there is not a link name
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_link);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_link);
 
    /***** Show the form again *****/
    Lnk_EditLinks ();
@@ -816,5 +816,5 @@ static void Lnk_CreateLink (struct Link *Lnk)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_link_X,
             Lnk->ShrtName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
diff --git a/swad_logo.c b/swad_logo.c
index b8ddb87f..1d1be628 100644
--- a/swad_logo.c
+++ b/swad_logo.c
@@ -288,7 +288,7 @@ void Log_RequestLogo (Sco_Scope_t Scope)
    /***** Write help message *****/
    sprintf (Gbl.Alert.Txt,Txt_You_can_send_a_file_with_an_image_in_PNG_format_transparent_background_and_size_X_Y,
 	    64,64);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Upload logo *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">"
@@ -376,7 +376,7 @@ void Log_ReceiveLogo (Sco_Scope_t Scope)
    if (WrongType)
      {
       sprintf (Gbl.Alert.Txt,Txt_The_file_is_not_X,"png");
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -387,7 +387,7 @@ void Log_ReceiveLogo (Sco_Scope_t Scope)
 	       (unsigned) Cod,
 	       (unsigned) Cod);
       if (!Fil_EndReceptionOfFile (FileNameLogo,Param))
-	 Lay_ShowAlert (Lay_WARNING,"Error copying file.");
+	 Ale_ShowAlert (Ale_WARNING,"Error copying file.");
      }
   }
 
diff --git a/swad_mail.c b/swad_mail.c
index 7bf96f4f..bdd109b9 100644
--- a/swad_mail.c
+++ b/swad_mail.c
@@ -376,7 +376,7 @@ void Mai_WriteWarningEmailNotifications (void)
             Txt_TABS_TXT[TabMailDomains],
 	    Txt_MENU_TITLE[TabMailDomains][Act_Actions[SuperActionMailDomains].IndexInMenu],
 	    Txt_Domains);
-   Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -553,7 +553,7 @@ void Mai_RemoveMailDomain (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Email_domain_X_removed,
             Mai.Domain);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show the form again *****/
    Mai_EditMailDomains ();
@@ -627,7 +627,7 @@ static void Mai_RenameMailDomain (Cns_ShrtOrFullName_t ShrtOrFullName)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_email_domain_X_empty,
                CurrentMaiName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -639,7 +639,7 @@ static void Mai_RenameMailDomain (Cns_ShrtOrFullName_t ShrtOrFullName)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_email_domain_X_already_exists,
                      NewMaiName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -649,14 +649,14 @@ static void Mai_RenameMailDomain (Cns_ShrtOrFullName_t ShrtOrFullName)
             /* Write message to show the change made */
             sprintf (Gbl.Alert.Txt,Txt_The_email_domain_X_has_been_renamed_as_Y,
                      CurrentMaiName,NewMaiName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_email_domain_X_has_not_changed,
                   CurrentMaiName);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -811,19 +811,19 @@ void Mai_RecFormNewMailDomain (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_email_domain_X_already_exists,
                   Mai->Domain);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else if (Mai_CheckIfMailDomainNameExists ("Info",Mai->Info,-1L))
         {
          sprintf (Gbl.Alert.Txt,Txt_The_email_domain_X_already_exists,
                   Mai->Info);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else	// Add new mail to database
          Mai_CreateMailDomain (Mai);
      }
    else	// If there is not a mail name
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_email_domain);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_email_domain);
 
    /***** Show the form again *****/
    Mai_EditMailDomains ();
@@ -851,7 +851,7 @@ static void Mai_CreateMailDomain (struct Mail *Mai)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_email_domain_X,
             Mai->Domain);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -1175,10 +1175,10 @@ void Mai_ShowFormOthEmail (void)
          Lay_EndRoundFrame ();
 	}
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+	 Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -1364,7 +1364,7 @@ void Mai_RemoveOtherUsrEmail (void)
                                &Gbl.Usrs.Other.UsrDat,NULL);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -1387,13 +1387,13 @@ static void Mai_RemoveEmail (struct UsrData *UsrDat)
 
       /***** Show message *****/
       sprintf (Gbl.Alert.Txt,Txt_Email_X_removed,Email);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
       /***** Update list of emails *****/
       Mai_GetEmailFromUsrCod (UsrDat);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -1444,7 +1444,7 @@ void Mai_NewOtherUsrEmail (void)
                                &Gbl.Usrs.Other.UsrDat,NULL);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -1473,7 +1473,7 @@ static void Mai_NewUsrEmail (struct UsrData *UsrDat,bool ItsMe)
 	   {
 	    sprintf (Gbl.Alert.Txt,Txt_The_email_address_X_matches_one_previously_registered,
 		     NewEmail);
-	    Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	    Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	   }
 	 else
 	   {
@@ -1482,7 +1482,7 @@ static void Mai_NewUsrEmail (struct UsrData *UsrDat,bool ItsMe)
 	       /***** Email updated sucessfully *****/
 	       sprintf (Gbl.Alert.Txt,Txt_The_email_address_X_has_been_registered_successfully,
 			NewEmail);
-	       Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	       Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
 	       /***** Update list of emails *****/
 	       Mai_GetEmailFromUsrCod (UsrDat);
@@ -1496,7 +1496,7 @@ static void Mai_NewUsrEmail (struct UsrData *UsrDat,bool ItsMe)
 	      {
 	       sprintf (Gbl.Alert.Txt,Txt_The_email_address_X_had_been_registered_by_another_user,
 			NewEmail);
-	       Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	       Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	      }
 	   }
 	}
@@ -1504,11 +1504,11 @@ static void Mai_NewUsrEmail (struct UsrData *UsrDat,bool ItsMe)
 	{
 	 sprintf (Gbl.Alert.Txt,Txt_The_email_address_entered_X_is_not_valid,
 		  NewEmail);
-	 Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 	}
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -1569,7 +1569,7 @@ void Mai_PutButtonToCheckEmailAddress (void)
    /***** Frame with button to go to account *****/
    Lay_StartRoundFrame (NULL,Txt_Email_unconfirmed,
                         NULL,Hlp_PROFILE_Account_email);
-   Lay_ShowAlert (Lay_WARNING,Txt_Please_check_and_confirm_your_email_address);
+   Ale_ShowAlert (Ale_WARNING,Txt_Please_check_and_confirm_your_email_address);
    Lay_EndRoundFrameWithButton (Lay_CONFIRM_BUTTON,Txt_Check);
 
    /***** End form *****/
@@ -1638,13 +1638,13 @@ bool Mai_SendMailMsgToConfirmEmail (void)
          Gbl.Usrs.Me.ConfirmEmailJustSent = true;
          return true;
       case 1:
-         Lay_ShowAlert (Lay_WARNING,Txt_There_was_a_problem_sending_an_email_automatically);
+         Ale_ShowAlert (Ale_WARNING,Txt_There_was_a_problem_sending_an_email_automatically);
          return false;
       default:
          sprintf (Gbl.Alert.Txt,"Internal error: an email message has not been sent successfully."
                               " Error code returned by the script: %d",
                   ReturnCode);
-         Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
          return false;
      }
   }
@@ -1659,7 +1659,7 @@ void Mai_ShowMsgConfirmEmailHasBeenSent (void)
 
    sprintf (Gbl.Alert.Txt,Txt_A_message_has_been_sent_to_email_address_X_to_confirm_that_address,
 	    Gbl.Usrs.Me.UsrDat.Email);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -1765,16 +1765,16 @@ void Mai_ConfirmEmail (void)
 
 	    sprintf (Gbl.Alert.Txt,Txt_The_email_X_has_been_confirmed,Email);
            }
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	}
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_The_email_address_has_not_been_confirmed);
+	 Ale_ShowAlert (Ale_WARNING,Txt_The_email_address_has_not_been_confirmed);
 
       /***** Free structure that stores the query result *****/
       DB_FreeMySQLResult (&mysql_res);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_Failed_email_confirmation_key);
+      Ale_ShowAlert (Ale_WARNING,Txt_Failed_email_confirmation_key);
 
    /***** Form to log in *****/
    Usr_WriteFormLogin (ActLogIn,NULL);
diff --git a/swad_mark.c b/swad_mark.c
index 9506c321..7607b45c 100644
--- a/swad_mark.c
+++ b/swad_mark.c
@@ -281,7 +281,7 @@ static void Mrk_ChangeNumRowsHeaderOrFooter (Brw_HeadOrFoot_t HeaderOrFooter)
       /***** Write message of success *****/
       sprintf (Gbl.Alert.Txt,Txt_The_number_of_rows_is_now_X,
                NumRows);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
       Lay_ShowErrorAndExit ("Wrong number of rows.");
@@ -701,7 +701,7 @@ void Mrk_ShowMyMarks (void)
       else	// Problems in table of marks or user's ID not found
         {
          fclose (FileUsrMarks);
-	 Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
 
       unlink (FileNameUsrMarks);	// File with marks is no longer necessary
diff --git a/swad_message.c b/swad_message.c
index c8b2d713..423bd1b0 100644
--- a/swad_message.c
+++ b/swad_message.c
@@ -683,14 +683,14 @@ void Msg_RecMsgFromUsr (void)
           NumRecipients > Cfg_MAX_RECIPIENTS)
         {
          /* Write warning message */
-         Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_send_a_message_to_so_many_recipients_);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_send_a_message_to_so_many_recipients_);
          Error = true;
         }
      }
    else	// No recipients selected
      {
       /* Write warning message */
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_recipients);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_recipients);
       Error = true;
      }
 
@@ -736,7 +736,7 @@ void Msg_RecMsgFromUsr (void)
            {
             /***** Show an alert indicating that the message has not been sent successfully *****/
             sprintf (Gbl.Alert.Txt,Txt_message_not_sent_to_X,UsrDstData.FullName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -774,7 +774,7 @@ void Msg_RecMsgFromUsr (void)
             sprintf (Gbl.Alert.Txt,NotifyByEmail ? Txt_message_sent_to_X_notified_by_email :
                                                  Txt_message_sent_to_X_not_notified_by_email,
                      UsrDstData.FullName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
             /***** Increment number of recipients *****/
             if (NotifyByEmail)
@@ -784,7 +784,7 @@ void Msg_RecMsgFromUsr (void)
         }
       else
         {
-         Lay_ShowAlert (Lay_ERROR,Txt_Error_getting_data_from_a_recipient);
+         Ale_ShowAlert (Ale_ERROR,Txt_Error_getting_data_from_a_recipient);
          NumErrors++;
         }
      }
@@ -808,27 +808,27 @@ void Msg_RecMsgFromUsr (void)
    if (NumRecipients)
      {
       if (NumRecipients == 1)
-         Lay_ShowAlert (Lay_SUCCESS,Txt_The_message_has_been_sent_to_1_recipient);
+         Ale_ShowAlert (Ale_SUCCESS,Txt_The_message_has_been_sent_to_1_recipient);
       else
         {
          sprintf (Gbl.Alert.Txt,Txt_The_message_has_been_sent_to_X_recipients,
                   (unsigned) NumRecipients);
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
         }
 
       /***** Show message about number of users to be notified *****/
       Ntf_ShowAlertNumUsrsToBeNotifiedByEMail (NumRecipientsToBeNotifiedByEMail);
-      Lay_ShowAlert (Lay_INFO,Txt_Do_not_reload_this_page_because_the_message_will_be_sent_again_);
+      Ale_ShowAlert (Ale_INFO,Txt_Do_not_reload_this_page_because_the_message_will_be_sent_again_);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_message_has_not_been_sent_to_any_recipient);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_message_has_not_been_sent_to_any_recipient);
 
    /***** Show alert about errors on sending message *****/
    if (NumErrors > 1)
      {
       sprintf (Gbl.Alert.Txt,Txt_There_have_been_X_errors_in_sending_the_message,
                (unsigned) NumErrors);
-      Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
      }
   }
 
@@ -879,14 +879,14 @@ void Msg_ReqDelAllRecMsgs (void)
                 	                    Txt_any_user,
                   Gbl.Msg.FilterCrsShrtName);
      }
-   Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+   Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
    /* Show received messages again */
    Gbl.Msg.TypeOfMessages = Msg_MESSAGES_RECEIVED;
    Msg_ShowSentOrReceivedMessages ();
 
    /* End alert */
-   Lay_ShowAlertAndButton2 (ActDelAllRcvMsg,NULL,
+   Ale_ShowAlertAndButton2 (ActDelAllRcvMsg,NULL,
                             Msg_PutHiddenParamsMsgsFilters,
                             Lay_REMOVE_BUTTON,Txt_Delete_messages_received);
   }
@@ -919,14 +919,14 @@ void Msg_ReqDelAllSntMsgs (void)
 	       Gbl.Msg.FilterFromTo[0] ? Gbl.Msg.FilterFromTo :
 					 Txt_any_user,
                Gbl.Msg.FilterCrsShrtName);
-   Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+   Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
    /* Show sent messages again */
    Gbl.Msg.TypeOfMessages = Msg_MESSAGES_SENT;
    Msg_ShowSentOrReceivedMessages ();
 
    /* End alert */
-   Lay_ShowAlertAndButton2 (ActDelAllSntMsg,NULL,
+   Ale_ShowAlertAndButton2 (ActDelAllSntMsg,NULL,
                             Msg_PutHiddenParamsMsgsFilters,
                             Lay_REMOVE_BUTTON,Txt_Delete_messages_sent);
   }
@@ -984,12 +984,12 @@ static void Msg_ShowNumMsgsDeleted (unsigned NumMsgs)
    extern const char *Txt_X_messages_have_been_deleted;
 
    if (NumMsgs == 1)
-      Lay_ShowAlert (Lay_SUCCESS,Txt_One_message_has_been_deleted);
+      Ale_ShowAlert (Ale_SUCCESS,Txt_One_message_has_been_deleted);
    else
      {
       sprintf (Gbl.Alert.Txt,Txt_X_messages_have_been_deleted,
                NumMsgs);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
   }
 
@@ -1088,7 +1088,7 @@ void Msg_DelSntMsg (void)
    /***** Delete the message *****/
    /* Delete the sent message */
    Msg_MoveSentMsgToDeleted (MsgCod);
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Message_deleted);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Message_deleted);
 
    /* Show the remaining messages */
    Msg_ShowSntMsgs ();
@@ -1110,7 +1110,7 @@ void Msg_DelRecMsg (void)
    /***** Delete the message *****/
    /* Delete the received message */
    Msg_MoveReceivedMsgToDeleted (MsgCod,Gbl.Usrs.Me.UsrDat.UsrCod);
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Message_deleted);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Message_deleted);
 
    /* Show the remaining messages */
    Msg_ShowRecMsgs ();
@@ -3642,7 +3642,7 @@ void Msg_BanSenderWhenShowingMsgs (void)
    /***** Show alert with the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_From_this_time_you_will_not_receive_messages_from_X,
             Gbl.Usrs.Other.UsrDat.FullName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /**** Show received messages again */
    Msg_ShowRecMsgs ();
@@ -3699,7 +3699,7 @@ static void Msg_UnbanSender (void)
    /***** Show alert with the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_From_this_time_you_can_receive_messages_from_X,
             Gbl.Usrs.Other.UsrDat.FullName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3759,7 +3759,7 @@ void Msg_ListBannedUsrs (void)
    NumUsrs = (unsigned) DB_QuerySELECT (Query,&mysql_res,"can not get banned users");
 
    if (NumUsrs == 0)   // If not result ==> sent message is deleted
-      Lay_ShowAlert (Lay_INFO,Txt_You_have_not_banned_any_sender);
+      Ale_ShowAlert (Ale_INFO,Txt_You_have_not_banned_any_sender);
    else
      {
       /***** Initialize structure with user's data *****/
diff --git a/swad_nickname.c b/swad_nickname.c
index 32df9413..2ca11091 100644
--- a/swad_nickname.c
+++ b/swad_nickname.c
@@ -318,10 +318,10 @@ void Nck_RemoveNick (void)
 
       /***** Show message *****/
       sprintf (Gbl.Alert.Txt,Txt_Nickname_X_removed,NicknameWithoutArroba);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_delete_your_current_nickname);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_delete_your_current_nickname);
 
    /***** Show my account again *****/
    Acc_ShowFormChangeMyAccount ();
@@ -414,8 +414,8 @@ void Nck_UpdateNick (void)
      }
 
    /***** Show message *****/
-   Lay_ShowAlert (Error ? Lay_WARNING :
-	                  Lay_SUCCESS,
+   Ale_ShowAlert (Error ? Ale_WARNING :
+	                  Ale_SUCCESS,
 	          Gbl.Alert.Txt);
 
    /***** Show my account again *****/
diff --git a/swad_notice.c b/swad_notice.c
index 08d00672..423f4747 100644
--- a/swad_notice.c
+++ b/swad_notice.c
@@ -96,7 +96,7 @@ void Not_ShowFormNotice (void)
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_The_notice_will_appear_as_a_yellow_note_,
             Gbl.CurrentCrs.Crs.FullName);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
 
    /***** Start form *****/
    Act_FormStart (ActRcvNot);
@@ -142,7 +142,7 @@ void Not_ReceiveNotice (void)
    RSS_UpdateRSSFileForACrs (&Gbl.CurrentCrs.Crs);
 
    /***** Write message of success *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Notice_created);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Notice_created);
 
    /***** Notify by email about the new notice *****/
    if ((NumUsrsToBeNotifiedByEMail = Ntf_StoreNotifyEventsToAllUsrs (Ntf_EVENT_NOTICE,NotCod)))
@@ -195,7 +195,7 @@ void Not_ListNoticesAfterRemoval (void)
    extern const char *Txt_Notice_removed;
 
    /***** Message of success *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Notice_removed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Notice_removed);
 
    /***** List remaining notices *****/
    Not_ListFullNotices ();
@@ -275,13 +275,13 @@ void Not_RequestRemNotice (void)
 
    /***** Show question and button to remove this notice *****/
    /* Start alert */
-   Lay_ShowAlertAndButton1 (Lay_QUESTION,Txt_Do_you_really_want_to_remove_the_following_notice);
+   Ale_ShowAlertAndButton1 (Ale_QUESTION,Txt_Do_you_really_want_to_remove_the_following_notice);
 
    /* Show notice */
    Not_GetDataAndShowNotice (Gbl.CurrentCrs.Notices.NotCod);
 
    /* End alert */
-   Lay_ShowAlertAndButton2 (ActRemNot,NULL,Not_PutParams,
+   Ale_ShowAlertAndButton2 (ActRemNot,NULL,Not_PutParams,
 			    Lay_REMOVE_BUTTON,Txt_Remove);
 
    /***** Show all notices *****/
@@ -394,7 +394,7 @@ void Not_ShowNotices (Not_Listing_t TypeNoticesListing)
 	                	                                           Txt_Notices,
 			      Not_PutIconsListNotices,Hlp_MESSAGES_Notices);
          if (!NumNotices)
-	    Lay_ShowAlert (Lay_INFO,Txt_No_notices);
+	    Ale_ShowAlert (Ale_INFO,Txt_No_notices);
 	}
 
       /***** Show the notices *****/
diff --git a/swad_notification.c b/swad_notification.c
index bee3bc44..f2f42b14 100644
--- a/swad_notification.c
+++ b/swad_notification.c
@@ -630,7 +630,7 @@ void Ntf_ShowMyNotifications (void)
       Usr_UsrDataDestructor (&UsrDat);
      }
    else
-      Lay_ShowAlert (Lay_INFO,AllNotifications ? Txt_You_have_no_notifications :
+      Ale_ShowAlert (Ale_INFO,AllNotifications ? Txt_You_have_no_notifications :
 	                                         Txt_You_have_no_unread_notifications);
 
    /***** End frame *****/
@@ -1796,7 +1796,7 @@ void Ntf_ShowAlertNumUsrsToBeNotifiedByEMail (unsigned NumUsrsToBeNotifiedByEMai
 
    sprintf (Gbl.Alert.Txt,"%s: %u",
             Txt_No_of_users_who_will_be_notified_by_email,NumUsrsToBeNotifiedByEMail);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -2010,7 +2010,7 @@ void Ntf_ChangeNotifyEvents (void)
    DB_QueryUPDATE (Query,"can not update user's preferences");
 
    /***** Show message *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Your_preferences_about_notifications_have_changed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Your_preferences_about_notifications_have_changed);
   }
 
 /*****************************************************************************/
diff --git a/swad_password.c b/swad_password.c
index 7b5f35b4..015b8325 100644
--- a/swad_password.c
+++ b/swad_password.c
@@ -205,8 +205,8 @@ void Pwd_ActChgMyPwd1 (void)
 void Pwd_ActChgMyPwd2 (void)
   {
    /***** Write error message when updating password *****/
-   Lay_ShowAlert (Gbl.Usrs.Error ? Lay_WARNING :
-	                           Lay_INFO,
+   Ale_ShowAlert (Gbl.Usrs.Error ? Ale_WARNING :
+	                           Ale_INFO,
 	          Gbl.Alert.Txt);
 
    /***** Retry? *****/
@@ -254,7 +254,7 @@ void Pwd_ShowFormSendNewPwd (void)
    Lay_StartRoundFrame (NULL,Txt_Forgotten_password,NULL,Hlp_PROFILE_Password);
 
    /***** Help text *****/
-   Lay_ShowAlert (Lay_INFO,Txt_If_you_have_forgotten_your_password_);
+   Ale_ShowAlert (Ale_INFO,Txt_If_you_have_forgotten_your_password_);
 
    /***** User's ID/nickname *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">"
@@ -289,7 +289,7 @@ void Pwd_ChkIdLoginAndSendNewPwd (void)
    /***** Check if user's ID or nickname is not empty *****/
    if (!Gbl.Usrs.Me.UsrIdLogin[0])
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_enter_your_nick_email_or_ID);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_enter_your_nick_email_or_ID);
       Pwd_ShowFormSendNewPwd ();
       return;
      }
@@ -353,21 +353,21 @@ void Pwd_ChkIdLoginAndSendNewPwd (void)
 	      {
 	       case 0: // Message sent successfully
 		  Pwd_SetMyPendingPassword (NewRandomPlainPassword);
-		  Lay_ShowAlert (Lay_INFO,Txt_If_you_have_written_your_ID_nickname_or_email_correctly_);
+		  Ale_ShowAlert (Ale_INFO,Txt_If_you_have_written_your_ID_nickname_or_email_correctly_);
 		  break;
 	       case 1:
-		  Lay_ShowAlert (Lay_WARNING,Txt_There_was_a_problem_sending_an_email_automatically);
+		  Ale_ShowAlert (Ale_WARNING,Txt_There_was_a_problem_sending_an_email_automatically);
 		  break;
 	       default:
 		  sprintf (Gbl.Alert.Txt,"Internal error: an email message has not been sent successfully."
 				       " Error code returned by the script: %d",
 			   ReturnCode);
-		  Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+		  Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
 		  break;
 	      }
 	 else	// I have no email address
 	    /***** Help message *****/
-	    Lay_ShowAlert (Lay_INFO,Txt_If_you_have_written_your_ID_nickname_or_email_correctly_);
+	    Ale_ShowAlert (Ale_INFO,Txt_If_you_have_written_your_ID_nickname_or_email_correctly_);
 	}
       else	// ListUsrCods.NumUsrs > 1
 	{
@@ -375,7 +375,7 @@ void Pwd_ChkIdLoginAndSendNewPwd (void)
 	 // TODO: This message allows to know if a ID exists in database (when no unique). This should be hidden!
 	 sprintf (Gbl.Alert.Txt,Txt_There_are_more_than_one_user_with_the_ID_X_Please_type_a_nick_or_email,
 		  Gbl.Usrs.Me.UsrIdLogin);
-	 Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 
 	 Pwd_ShowFormSendNewPwd ();
 	}
@@ -385,7 +385,7 @@ void Pwd_ChkIdLoginAndSendNewPwd (void)
      }
    else        // ListUsrCods.NumUsrs == 0 ==> user does not exist
       /***** Help message *****/
-      Lay_ShowAlert (Lay_INFO,Txt_If_you_have_written_your_ID_nickname_or_email_correctly_);
+      Ale_ShowAlert (Ale_INFO,Txt_If_you_have_written_your_ID_nickname_or_email_correctly_);
   }
 
 /*****************************************************************************/
@@ -532,8 +532,8 @@ void Pwd_UpdateOtherPwd2 (void)
   {
    /***** Write message when updating the password *****/
    if (Gbl.Alert.Txt[0])
-      Lay_ShowAlert (Gbl.Usrs.Error ? Lay_WARNING :
-	                              Lay_INFO,
+      Ale_ShowAlert (Gbl.Usrs.Error ? Ale_WARNING :
+	                              Ale_INFO,
 	             Gbl.Alert.Txt);
 
    if (Gbl.Usrs.Error)
@@ -684,11 +684,11 @@ void Pwd_ShowFormChgPwd (void)
 
    /***** Help message *****/
    if (!IHaveAPasswordInDB) // If I don't have a password in database...
-      Lay_ShowAlert (Lay_WARNING,Txt_Before_going_to_any_other_option_you_must_create_your_password);
+      Ale_ShowAlert (Ale_WARNING,Txt_Before_going_to_any_other_option_you_must_create_your_password);
    else if (Gbl.Usrs.Me.LoginPlainPassword[0])
      {
       if (!Pwd_FastCheckIfPasswordSeemsGood (Gbl.Usrs.Me.LoginPlainPassword))
-         Lay_ShowAlert (Lay_WARNING,Txt_Your_password_is_not_secure_enough);
+         Ale_ShowAlert (Ale_WARNING,Txt_Your_password_is_not_secure_enough);
      }
 
    /***** Start form *****/
@@ -719,7 +719,7 @@ void Pwd_ShowFormChgPwd (void)
 		      "<td colspan=\"2\">");
    sprintf (Gbl.Alert.Txt,Txt_Your_password_must_be_at_least_X_characters_and_can_not_contain_spaces_,
             Pwd_MIN_CHARS_PLAIN_PASSWORD);
-   Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
    fprintf (Gbl.F.Out,"</td>"
 		      "</tr>");
 
@@ -846,10 +846,10 @@ void Pwd_ShowFormOthPwd (void)
          Lay_EndRoundFrame ();
 	}
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+	 Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -933,7 +933,7 @@ bool Pwd_GetConfirmationOnDangerousAction (void)
    /***** Get if consent has been done *****/
    if (!Par_GetParToBool ("Consent"))
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_have_not_confirmed_the_action);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_have_not_confirmed_the_action);
       return false;
      }
 
@@ -947,7 +947,7 @@ bool Pwd_GetConfirmationOnDangerousAction (void)
    /* Compare passwords */
    if (strcmp (Gbl.Usrs.Me.LoginEncryptedPassword,EncryptedPassword))
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_have_not_entered_your_password_correctly);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_have_not_entered_your_password_correctly);
       return false;
      }
 
diff --git a/swad_photo.c b/swad_photo.c
index 5ebd657a..d2393370 100644
--- a/swad_photo.c
+++ b/swad_photo.c
@@ -316,7 +316,7 @@ static void Pho_ReqPhoto (const struct UsrData *UsrDat,const char *PhotoURL)
    /***** Show current photo and help message *****/
    Pho_ShowUsrPhoto (UsrDat,PhotoURL,
                      "PHOTO186x248",Pho_NO_ZOOM,false);
-   Lay_ShowAlert (Lay_INFO,Txt_You_can_send_a_file_with_an_image_in_JPEG_format_);
+   Ale_ShowAlert (Ale_INFO,Txt_You_can_send_a_file_with_an_image_in_JPEG_format_);
 
    /***** Form to upload photo *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">"
@@ -360,10 +360,10 @@ void Pho_SendPhotoUsr (void)
 	    Pho_ReqOtherUsrPhoto ();
 	}
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+         Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else		// User not found
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -396,7 +396,7 @@ void Pho_RecOtherUsrPhotoDetFaces (void)
 	 Pho_ReqOtherUsrPhoto ();	// Request user's photograph again
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -414,18 +414,18 @@ void Pho_ReqRemoveMyPhoto (void)
      {
       /***** Show question and button to remove my photo *****/
       /* Start alert */
-      Lay_ShowAlertAndButton1 (Lay_QUESTION,Txt_Do_you_really_want_to_remove_your_photo);
+      Ale_ShowAlertAndButton1 (Ale_QUESTION,Txt_Do_you_really_want_to_remove_your_photo);
 
       /* Show current photo */
       Pho_ShowUsrPhoto (&Gbl.Usrs.Me.UsrDat,Gbl.Usrs.Me.PhotoURL,
 			"PHOTO186x248",Pho_NO_ZOOM,false);
 
       /* End alert */
-      Lay_ShowAlertAndButton2 (ActRemMyPho,NULL,NULL,
+      Ale_ShowAlertAndButton2 (ActRemMyPho,NULL,NULL,
                                Lay_REMOVE_BUTTON,Txt_Remove_photo);
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_The_photo_no_longer_exists);
+      Ale_ShowAlert (Ale_INFO,Txt_The_photo_no_longer_exists);
   }
 
 /*****************************************************************************/
@@ -444,7 +444,7 @@ void Pho_RemoveMyPhoto1 (void)
 void Pho_RemoveMyPhoto2 (void)
   {
    /***** Write success / warning message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
   }
 
 /*****************************************************************************/
@@ -475,27 +475,27 @@ void Pho_ReqRemoveUsrPhoto (void)
 	    /* Start alert */
 	    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_photo_of_X,
 	             Gbl.Usrs.Other.UsrDat.FullName);
-	    Lay_ShowAlertAndButton1 (Lay_QUESTION,Gbl.Alert.Txt);
+	    Ale_ShowAlertAndButton1 (Ale_QUESTION,Gbl.Alert.Txt);
 
 	    /* Show current photo */
 	    Pho_ShowUsrPhoto (&Gbl.Usrs.Other.UsrDat,PhotoURL,
 			      "PHOTO186x248",Pho_NO_ZOOM,false);
 
 	    /* End alert */
-	    Lay_ShowAlertAndButton2 ( Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActRemStdPho :
+	    Ale_ShowAlertAndButton2 ( Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActRemStdPho :
 			             (Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_TEACHER ? ActRemTchPho :
 										                ActRemOthPho),	// Guest, visitor or admin
 	                             NULL,Usr_PutParamOtherUsrCodEncrypted,
 				     Lay_REMOVE_BUTTON,Txt_Remove_photo);
 	   }
 	 else
-	    Lay_ShowAlert (Lay_INFO,Txt_The_photo_no_longer_exists);
+	    Ale_ShowAlert (Ale_INFO,Txt_The_photo_no_longer_exists);
 	}
       else
-	 Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+	 Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -514,10 +514,10 @@ void Pho_RemoveUsrPhoto (void)
      {
       /***** Remove photo *****/
       if (Pho_RemovePhoto (&Gbl.Usrs.Other.UsrDat))
-         Lay_ShowPendingAlert ();
+         Ale_ShowPendingAlert ();
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
@@ -599,7 +599,7 @@ static bool Pho_ReceivePhotoAndDetectFaces (bool ItsMe,const struct UsrData *Usr
    if (WrongType)
      {
       sprintf (Gbl.Alert.Txt,Txt_The_file_is_not_X,"jpg");
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
       return false;
      }
 
@@ -609,7 +609,7 @@ static bool Pho_ReceivePhotoAndDetectFaces (bool ItsMe,const struct UsrData *Usr
             Cfg_FOLDER_PHOTO_TMP,Gbl.UniqueNameEncrypted);
    if (!Fil_EndReceptionOfFile (FileNamePhotoTmp,Param))
      {
-      Lay_ShowAlert (Lay_WARNING,"Error copying file.");
+      Ale_ShowAlert (Ale_WARNING,"Error copying file.");
       return false;
      }
 
@@ -675,13 +675,13 @@ static bool Pho_ReceivePhotoAndDetectFaces (bool ItsMe,const struct UsrData *Usr
 
    /***** Message to the user about the number of faces detected in the image*****/
    if (NumFacesTotal == 0)
-      Lay_ShowAlert (Lay_WARNING,Txt_Could_not_detect_any_face_in_front_position_);
+      Ale_ShowAlert (Ale_WARNING,Txt_Could_not_detect_any_face_in_front_position_);
    else if (NumFacesTotal == 1)
      {
       if (NumFacesGreen == 1)
-         Lay_ShowAlert (Lay_SUCCESS,Txt_A_face_marked_in_green_has_been_detected_);
+         Ale_ShowAlert (Ale_SUCCESS,Txt_A_face_marked_in_green_has_been_detected_);
       else
-         Lay_ShowAlert (Lay_WARNING,Txt_A_face_marked_in_red_has_been_detected_);
+         Ale_ShowAlert (Ale_WARNING,Txt_A_face_marked_in_red_has_been_detected_);
      }
    else        // NumFacesTotal > 1
      {
@@ -689,13 +689,13 @@ static bool Pho_ReceivePhotoAndDetectFaces (bool ItsMe,const struct UsrData *Usr
         {
          sprintf (Gbl.Alert.Txt,Txt_X_faces_marked_in_green_have_been_detected_,
                   NumFacesGreen);
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
         }
       else if (NumFacesGreen == 0)
         {
          sprintf (Gbl.Alert.Txt,Txt_X_faces_marked_in_red_have_been_detected_,
                   NumFacesRed);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else        // NumFacesGreen > 0
         {
@@ -705,7 +705,7 @@ static bool Pho_ReceivePhotoAndDetectFaces (bool ItsMe,const struct UsrData *Usr
          else
             sprintf (Gbl.Alert.Txt,Txt_X_faces_have_been_detected_in_front_position_Y_Z_,
                      NumFacesTotal,NumFacesGreen,NumFacesRed);
-         Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
         }
      }
 
@@ -779,7 +779,7 @@ void Pho_UpdateUsrPhoto1 (void)
    if (Usr_GetParamOtherUsrCodEncryptedAndGetUsrData ())
       Pho_UpdatePhoto1 (&Gbl.Usrs.Other.UsrDat);
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 void Pho_UpdateUsrPhoto2 (void)
@@ -817,12 +817,12 @@ static void Pho_UpdatePhoto1 (struct UsrData *UsrDat)
       /* Remove the user from the list of users without photo */
       Pho_RemoveUsrFromTableClicksWithoutPhoto (UsrDat->UsrCod);
 
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,"%s",Txt_Photo_has_been_updated);
      }
    else
      {
-      Gbl.Alert.Type = Lay_ERROR;
+      Gbl.Alert.Type = Ale_ERROR;
       sprintf (Gbl.Alert.Txt,"%s","Error updating photo.");
      }
   }
@@ -854,7 +854,7 @@ static void Pho_UpdatePhoto2 (void)
    Lay_EndTable ();
 
    /***** Show message *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
   }
 
 /*****************************************************************************/
@@ -1045,13 +1045,13 @@ bool Pho_RemovePhoto (struct UsrData *UsrDat)
 
    if (NumErrors)
      {
-      Gbl.Alert.Type = Lay_ERROR;
+      Gbl.Alert.Type = Ale_ERROR;
       sprintf (Gbl.Alert.Txt,"%s","Error removing photo.");
       return false;
      }
    else
      {
-      Gbl.Alert.Type = Lay_SUCCESS;
+      Gbl.Alert.Type = Ale_SUCCESS;
       sprintf (Gbl.Alert.Txt,"%s",Txt_Photo_removed);
       return true;
      }
@@ -1220,7 +1220,7 @@ void Pho_ChangePhotoVisibility (void)
    DB_QueryUPDATE (Query,"can not update your preference about photo visibility");
 
    /***** Show alert *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_The_visibility_of_your_photo_has_changed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_The_visibility_of_your_photo_has_changed);
 
    /***** Show form again *****/
    Pri_EditMyPrivacy ();
diff --git a/swad_place.c b/swad_place.c
index 8da28393..e9ac7bd1 100644
--- a/swad_place.c
+++ b/swad_place.c
@@ -567,7 +567,7 @@ void Plc_RemovePlace (void)
 
    /***** Check if this place has centres *****/
    if (Plc.NumCtrs)	// Place has centres ==> don't remove
-      Lay_ShowAlert (Lay_WARNING,Txt_To_remove_a_place_you_must_first_remove_all_centres_of_that_place);
+      Ale_ShowAlert (Ale_WARNING,Txt_To_remove_a_place_you_must_first_remove_all_centres_of_that_place);
    else			// Place has no centres ==> remove it
      {
       /***** Remove place *****/
@@ -578,7 +578,7 @@ void Plc_RemovePlace (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_Place_X_removed,
                Plc.FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -653,7 +653,7 @@ static void Plc_RenamePlace (Cns_ShrtOrFullName_t ShrtOrFullName)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_place_X_empty,
                CurrentPlcName);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -665,7 +665,7 @@ static void Plc_RenamePlace (Cns_ShrtOrFullName_t ShrtOrFullName)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_place_X_already_exists,
                      NewPlcName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -675,14 +675,14 @@ static void Plc_RenamePlace (Cns_ShrtOrFullName_t ShrtOrFullName)
             /* Write message to show the change made */
             sprintf (Gbl.Alert.Txt,Txt_The_place_X_has_been_renamed_as_Y,
                      CurrentPlcName,NewPlcName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_place_X_has_not_changed,
                   CurrentPlcName);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -839,19 +839,19 @@ void Plc_RecFormNewPlace (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_place_X_already_exists,
                   Plc->ShrtName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else if (Plc_CheckIfPlaceNameExists ("FullName",Plc->FullName,-1L))
         {
          sprintf (Gbl.Alert.Txt,Txt_The_place_X_already_exists,
                   Plc->FullName);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
       else	// Add new place to database
          Plc_CreatePlace (Plc);
      }
    else	// If there is not a place name
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_place);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_short_name_and_the_full_name_of_the_new_place);
 
    /***** Show the form again *****/
    Plc_EditPlaces ();
@@ -879,5 +879,5 @@ static void Plc_CreatePlace (struct Place *Plc)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_place_X,
             Plc->FullName);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
diff --git a/swad_plugin.c b/swad_plugin.c
index a6a05b37..bb084537 100644
--- a/swad_plugin.c
+++ b/swad_plugin.c
@@ -83,7 +83,7 @@ void Plg_ListPlugins (void)
 
    if (Gbl.Usrs.Me.LoggedRole != Rol_SYS_ADM)
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_Option_under_development);
+      Ale_ShowAlert (Ale_WARNING,Txt_Option_under_development);
       return;
      }
 
@@ -499,7 +499,7 @@ void Plg_RemovePlugin (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Plugin_X_removed,
             Plg.Name);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show the form again *****/
    Plg_EditPlugins ();
@@ -537,7 +537,7 @@ void Plg_RenamePlugin (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_plugin_X_empty,
                Plg->Name);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -549,7 +549,7 @@ void Plg_RenamePlugin (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_plugin_X_already_exists,
                      NewPlgName);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else
            {
@@ -561,14 +561,14 @@ void Plg_RenamePlugin (void)
             /***** Write message to show the change made *****/
             sprintf (Gbl.Alert.Txt,Txt_The_plugin_X_has_been_renamed_as_Y,
                      Plg->Name,NewPlgName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_plugin_X_has_not_changed,
                   Plg->Name);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -626,12 +626,12 @@ void Plg_ChangePlgDescription (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_description_is_X,
                NewDescription);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
      {
       sprintf (Gbl.Alert.Txt,"%s",Txt_You_can_not_leave_the_description_empty);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -673,10 +673,10 @@ void Plg_ChangePlgLogo (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_logo_is_X,
                NewLogo);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_logo_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_logo_empty);
 
    /***** Show the form again *****/
    Str_Copy (Plg->Logo,NewLogo,
@@ -717,10 +717,10 @@ void Plg_ChangePlgAppKey (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_logo_is_X,	// TODO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
                NewAppKey);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_logo_empty);	// TODO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_logo_empty);	// TODO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
 
    /***** Show the form again *****/
    Str_Copy (Plg->AppKey,NewAppKey,
@@ -761,10 +761,10 @@ void Plg_ChangePlgURL (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_URL_is_X,
                NewURL);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_URL_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_URL_empty);
 
    /***** Show the form again *****/
    Str_Copy (Plg->URL,NewURL,
@@ -805,10 +805,10 @@ void Plg_ChangePlgIP (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_The_new_IP_address_is_X,
                NewIP);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_the_IP_address_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_the_IP_address_empty);
 
    /***** Show the form again *****/
    Str_Copy (Plg->IP,NewIP,
@@ -1013,16 +1013,16 @@ void Plg_RecFormNewPlg (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_plugin_X_already_exists,
                      Plg->Name);
-            Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
            }
          else	// Add new plugin to database
             Plg_CreatePlugin (Plg);
         }
       else	// If there is not a logo, a URL or a IP
-         Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_logo_the_application_key_the_URL_and_the_IP_address_of_the_new_plugin);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_logo_the_application_key_the_URL_and_the_IP_address_of_the_new_plugin);
      }
    else	// If there is not a plugin name
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_name_and_the_description_of_the_new_plugin);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_name_and_the_description_of_the_new_plugin);
 
    /***** Show the form again *****/
    Plg_EditPlugins ();
@@ -1053,7 +1053,7 @@ static void Plg_CreatePlugin (struct Plugin *Plg)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_plugin_X,
             Plg->Name);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
diff --git a/swad_privacy.c b/swad_privacy.c
index 89cf5e65..dc6a8ad3 100644
--- a/swad_privacy.c
+++ b/swad_privacy.c
@@ -99,7 +99,7 @@ void Pri_EditMyPrivacy (void)
    /***** If any of my preferences about privacy is unknown *****/
    if (Gbl.Usrs.Me.UsrDat.PhotoVisibility   == Pri_VISIBILITY_UNKNOWN ||
        Gbl.Usrs.Me.UsrDat.ProfileVisibility == Pri_VISIBILITY_UNKNOWN)
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_review_your_privacy_preferences);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_review_your_privacy_preferences);
 
    /***** Start frame and table *****/
    Lay_StartRoundFrameTable (NULL,Txt_Privacy,Pri_PutIconsPrivacy,
diff --git a/swad_profile.c b/swad_profile.c
index 5d82250d..dc5b8047 100644
--- a/swad_profile.c
+++ b/swad_profile.c
@@ -230,7 +230,7 @@ void Prf_GetUsrDatAndShowUserProfile (void)
    if (!ProfileShown)
      {
       /* Show error message */
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
 
       /* Request a user's profile */
       Prf_RequestUserProfile ();
@@ -338,7 +338,7 @@ void Prf_ChangeProfileVisibility (void)
    DB_QueryUPDATE (Query,"can not update your preference about public profile visibility");
 
    /***** Show alert *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_The_visibility_of_your_public_profile_has_changed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_The_visibility_of_your_public_profile_has_changed);
 
    /***** Show form again *****/
    Pri_EditMyPrivacy ();
diff --git a/swad_record.c b/swad_record.c
index 7e326bf0..c55477c6 100644
--- a/swad_record.c
+++ b/swad_record.c
@@ -190,7 +190,7 @@ void Rec_ReqEditRecordFields (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_There_are_no_record_fields_in_the_course_X,
                Gbl.CurrentCrs.Crs.FullName);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
 
    /***** Put a form to create a new record field *****/
@@ -470,13 +470,13 @@ void Rec_ReceiveFormField (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_record_field_X_already_exists,
                   Gbl.CurrentCrs.Records.Field.Name);
-         Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
         }
       else	// Add the new field to the database
          Rec_CreateRecordField ();
      }
    else		// If there is not name
-      Lay_ShowAlert (Lay_ERROR,Txt_You_must_specify_the_name_of_the_new_record_field);
+      Ale_ShowAlert (Ale_ERROR,Txt_You_must_specify_the_name_of_the_new_record_field);
 
    /***** Show the form again *****/
    Rec_ReqEditRecordFields ();
@@ -574,7 +574,7 @@ void Rec_CreateRecordField (void)
    /***** Write message of success *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_record_field_X,
             Gbl.CurrentCrs.Records.Field.Name);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -645,15 +645,15 @@ void Rec_AskConfirmRemFieldWithRecords (unsigned NumRecords)
             Gbl.CurrentCrs.Records.Field.Name,Gbl.CurrentCrs.Crs.FullName);
    if (NumRecords == 1)
       Str_Concat (Gbl.Alert.Txt,Txt_this_field_is_filled_in_the_record_of_one_student,
-                  Lay_MAX_BYTES_ALERT);
+                  Ale_MAX_BYTES_ALERT);
    else
      {
       sprintf (Message_part2,Txt_this_field_is_filled_in_the_records_of_X_students,
                NumRecords);
       Str_Concat (Gbl.Alert.Txt,Message_part2,
-                  Lay_MAX_BYTES_ALERT);
+                  Ale_MAX_BYTES_ALERT);
      }
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            ActRemFie,NULL,Rec_PutParamFielCod,
 			   Lay_REMOVE_BUTTON,Txt_Remove_record_field);
 
@@ -689,7 +689,7 @@ void Rec_RemoveFieldFromDB (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Record_field_X_removed,
             Gbl.CurrentCrs.Records.Field.Name);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show the form again *****/
    Rec_ReqEditRecordFields ();
@@ -795,7 +795,7 @@ void Rec_RenameField (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_field_X_empty,
                Gbl.CurrentCrs.Records.Field.Name);
-      Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
      }
    else
      {
@@ -808,7 +808,7 @@ void Rec_RenameField (void)
            {
             sprintf (Gbl.Alert.Txt,Txt_The_record_field_X_already_exists,
                      NewFieldName);
-            Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
            }
          else
            {
@@ -821,14 +821,14 @@ void Rec_RenameField (void)
             /***** Write message to show the change made *****/
             sprintf (Gbl.Alert.Txt,Txt_The_record_field_X_has_been_renamed_as_Y,
                      Gbl.CurrentCrs.Records.Field.Name,NewFieldName);
-            Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
            }
         }
       else	// The same name
         {
          sprintf (Gbl.Alert.Txt,Txt_The_name_of_the_field_X_has_not_changed,
                   NewFieldName);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
      }
 
@@ -870,7 +870,7 @@ void Rec_ChangeLinesField (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_The_number_of_editing_lines_in_the_record_field_X_has_not_changed,
                Gbl.CurrentCrs.Records.Field.Name);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
    else
      {
@@ -883,7 +883,7 @@ void Rec_ChangeLinesField (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_From_now_on_the_number_of_editing_lines_of_the_field_X_is_Y,
 	       Gbl.CurrentCrs.Records.Field.Name,NewNumLines);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -923,7 +923,7 @@ void Rec_ChangeVisibilityField (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_The_visibility_of_the_record_field_X_has_not_changed,
                Gbl.CurrentCrs.Records.Field.Name);
-      Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
      }
    else
      {
@@ -936,7 +936,7 @@ void Rec_ChangeVisibilityField (void)
       /***** Write message to show the change made *****/
       sprintf (Gbl.Alert.Txt,Txt_RECORD_FIELD_VISIBILITY_MSG[NewVisibility],
 	       Gbl.CurrentCrs.Records.Field.Name);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Show the form again *****/
@@ -1011,7 +1011,7 @@ static void Rec_ListRecordsGsts (Rec_SharedRecordViewType_t TypeOfView)
    /* Check the number of students to show */
    if (!Usr_CountNumUsrsInListOfSelectedUsrs ())	// If no students selected...
      {						// ...write warning notice
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_users);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_users);
       Usr_SeeGuests ();			// ...show again the form
       return;
      }
@@ -1055,7 +1055,7 @@ static void Rec_ListRecordsGsts (Rec_SharedRecordViewType_t TypeOfView)
 
 	 /* Show optional alert */
 	 if (UsrDat.UsrCod == Gbl.Usrs.Other.UsrDat.UsrCod)	// Selected user
-	    Lay_ShowPendingAlert ();
+	    Ale_ShowPendingAlert ();
 
 	 /* Shared record */
 	 fprintf (Gbl.F.Out,"<section class=\"REC_SHA\">");
@@ -1122,7 +1122,7 @@ static void Rec_ShowRecordOneStdCrs (void)
    fprintf (Gbl.F.Out,"</div>");
 
    /***** Show optional alert (result of editing data in course record) *****/
-   Lay_ShowPendingAlert ();
+   Ale_ShowPendingAlert ();
 
    /***** Start container for this user *****/
    fprintf (Gbl.F.Out,"<section class=\"REC_USR\">");
@@ -1198,7 +1198,7 @@ static void Rec_ListRecordsStds (Rec_SharedRecordViewType_t ShaTypeOfView,
    /* Check the number of students to show */
    if (!Usr_CountNumUsrsInListOfSelectedUsrs ())	// If no students selected...
      {						// ...write warning notice
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_students);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_students);
       Usr_SeeStudents ();			// ...show again the form
       return;
      }
@@ -1255,7 +1255,7 @@ static void Rec_ListRecordsStds (Rec_SharedRecordViewType_t ShaTypeOfView,
 
 	    /* Show optional alert */
 	    if (UsrDat.UsrCod == Gbl.Usrs.Other.UsrDat.UsrCod)	// Selected user
-               Lay_ShowPendingAlert ();
+               Ale_ShowPendingAlert ();
 
             /* Shared record */
             fprintf (Gbl.F.Out,"<section class=\"REC_SHA\">");
@@ -1417,7 +1417,7 @@ static void Rec_ListRecordsTchs (Rec_SharedRecordViewType_t TypeOfView)
    /* Check the number of teachers to show */
    if (!Usr_CountNumUsrsInListOfSelectedUsrs ())	// If no teachers selected...
      {						// ...write warning notice
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_teachers);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_teachers);
       Usr_SeeTeachers ();			// ...show again the form
       return;
      }
@@ -1476,7 +1476,7 @@ static void Rec_ListRecordsTchs (Rec_SharedRecordViewType_t TypeOfView)
 
 	    /* Show optional alert */
 	    if (UsrDat.UsrCod == Gbl.Usrs.Other.UsrDat.UsrCod)	// Selected user
-	       Lay_ShowPendingAlert ();
+	       Ale_ShowPendingAlert ();
 
 	    /* Shared record */
             fprintf (Gbl.F.Out,"<section class=\"REC_SHA\">");
@@ -1637,7 +1637,7 @@ void Rec_UpdateAndShowOtherCrsRecord (void)
    long OriginalActCod;
 
    /***** Initialize alert type and message *****/
-   Gbl.Alert.Type = Lay_NONE;	// Do not show alert
+   Gbl.Alert.Type = Ale_NONE;	// Do not show alert
 
    /***** Get where we came from *****/
    OriginalActCod = Par_GetParToLong ("OriginalActCod");
@@ -1658,7 +1658,7 @@ void Rec_UpdateAndShowOtherCrsRecord (void)
 
    /***** Update the record *****/
    Rec_UpdateCrsRecord (Gbl.Usrs.Other.UsrDat.UsrCod);
-   Gbl.Alert.Type = Lay_SUCCESS;
+   Gbl.Alert.Type = Ale_SUCCESS;
    sprintf (Gbl.Alert.Txt,"%s",
             Txt_Student_record_card_in_this_course_has_been_updated);
 
@@ -1996,7 +1996,7 @@ void Rec_RemoveFieldsCrsRecordInCrs (long UsrCod,struct Course *Crs,Cns_QuietOrV
      {
       sprintf (Gbl.Alert.Txt,Txt_User_record_card_in_the_course_X_has_been_removed,
                Crs->FullName);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
   }
 
@@ -2015,7 +2015,7 @@ void Rec_RemoveFieldsCrsRecordAll (long UsrCod,Cns_QuietOrVerbose_t QuietOrVerbo
 
    /***** Write mensaje *****/
    if (QuietOrVerbose == Cns_VERBOSE)
-      Lay_ShowAlert (Lay_SUCCESS,Txt_User_record_cards_in_all_courses_have_been_removed);
+      Ale_ShowAlert (Ale_SUCCESS,Txt_User_record_cards_in_all_courses_have_been_removed);
   }
 
 /*****************************************************************************/
@@ -2027,7 +2027,7 @@ static void Rec_ShowMyCrsRecordUpdated (void)
    extern const char *Txt_Your_record_card_in_this_course_has_been_updated;
 
    /***** Write mensaje of success *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Your_record_card_in_this_course_has_been_updated);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Your_record_card_in_this_course_has_been_updated);
 
    /***** Shared record *****/
    Rec_ShowSharedUsrRecord (Rec_SHA_RECORD_LIST,&Gbl.Usrs.Me.UsrDat,NULL);
@@ -2102,12 +2102,12 @@ void Rec_ShowFormMySharedRecord (void)
 
    /***** If user has no sex, name and surname... *****/
    if (Gbl.Usrs.Me.UsrDat.CtyCod < 0)
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_fill_in_your_record_card_including_your_country_nationality);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_fill_in_your_record_card_including_your_country_nationality);
    else if (Gbl.Usrs.Me.UsrDat.Sex == Usr_SEX_UNKNOWN)
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_fill_in_your_record_card_including_your_sex);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_fill_in_your_record_card_including_your_sex);
    else if (!Gbl.Usrs.Me.UsrDat.FirstName[0] ||
 	    !Gbl.Usrs.Me.UsrDat.Surname1[0])
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_fill_in_your_record_card_including_your_name);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_fill_in_your_record_card_including_your_name);
 
    /***** Contextual links *****/
    fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
@@ -2146,7 +2146,7 @@ void Rec_ShowMySharedRecordUpd (void)
    extern const char *Txt_Your_personal_data_have_been_updated;
 
    /***** Write alert *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Your_personal_data_have_been_updated);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Your_personal_data_have_been_updated);
 
    /***** Show my record for checking *****/
    Rec_ShowSharedUsrRecord (Rec_SHA_MY_RECORD_CHECK,&Gbl.Usrs.Me.UsrDat,NULL);
@@ -3858,13 +3858,13 @@ void Rec_ShowFormMyInsCtrDpt (void)
 
    /***** If there is no country, institution, centre or department *****/
    if (Gbl.Usrs.Me.UsrDat.InsCtyCod < 0)
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_select_the_country_of_your_institution);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_select_the_country_of_your_institution);
    else if (Gbl.Usrs.Me.UsrDat.InsCod < 0)
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_fill_in_your_institution);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_fill_in_your_institution);
    else if ((Gbl.Usrs.Me.UsrDat.Roles & (1 << Rol_TEACHER)) &&
             (Gbl.Usrs.Me.UsrDat.Tch.CtrCod < 0 ||
              Gbl.Usrs.Me.UsrDat.Tch.DptCod < 0))
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_fill_in_your_centre_and_department);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_fill_in_your_centre_and_department);
 
    /***** Start table *****/
    Lay_StartRoundFrameTable ("800px",
diff --git a/swad_search.c b/swad_search.c
index 6dcfba59..faeace78 100644
--- a/swad_search.c
+++ b/swad_search.c
@@ -644,7 +644,7 @@ static void Sch_SearchInDB (void)
      }
 
    if (NumResults == 0)
-      Lay_ShowAlert (Lay_INFO,Txt_No_results);
+      Ale_ShowAlert (Ale_INFO,Txt_No_results);
   }
 
 /*****************************************************************************/
@@ -840,7 +840,7 @@ static unsigned Sch_SearchUsrsInDB (Rol_Role_t Role)
       // Too short
       if (!WarningMessageWritten)	// To avoid repetitions
 	{
-         Lay_ShowAlert (Lay_WARNING,Txt_The_search_text_must_be_longer);
+         Ale_ShowAlert (Ale_WARNING,Txt_The_search_text_must_be_longer);
          WarningMessageWritten = true;
 	}
 
diff --git a/swad_social.c b/swad_social.c
index 273350cd..c8ee4e53 100644
--- a/swad_social.c
+++ b/swad_social.c
@@ -1092,7 +1092,7 @@ static void Soc_ShowWarningYouDontFollowAnyUser (void)
    if (!Fol_GetNumFollowing (Gbl.Usrs.Me.UsrDat.UsrCod))
      {
       /***** Show warning if I do not follow anyone *****/
-      Lay_ShowAlert (Lay_WARNING,Txt_You_dont_follow_any_user);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_dont_follow_any_user);
 
       /***** Put link to show users to follow *****/
       fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
@@ -1292,7 +1292,7 @@ static void Soc_WriteSocialNote (const struct SocialNote *SocNot,
    if (SocNot->NotCod   <= 0 ||
        SocNot->NoteType == Soc_NOTE_UNKNOWN ||
        SocNot->UsrCod   <= 0)
-      Lay_ShowAlert (Lay_ERROR,"Error in social note.");
+      Ale_ShowAlert (Ale_ERROR,"Error in social note.");
    else
      {
       /***** Initialize location in hierarchy *****/
@@ -2546,7 +2546,7 @@ static void Soc_WriteSocialComment (struct SocialComment *SocCom,
    if (SocCom->PubCod <= 0 ||
        SocCom->NotCod <= 0 ||
        SocCom->UsrCod <= 0)
-      Lay_ShowAlert (Lay_ERROR,"Error in social comment.");
+      Ale_ShowAlert (Ale_ERROR,"Error in social comment.");
    else
      {
       /***** Get author's data *****/
@@ -3048,7 +3048,7 @@ static long Soc_ReceiveComment (void)
       Img_ImageDestructor (&Image);
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_original_post_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_original_post_no_longer_exists);
 
    return SocNot.NotCod;
   }
@@ -3126,7 +3126,7 @@ static long Soc_ShareSocialNote (void)
 	   }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_original_post_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_original_post_no_longer_exists);
 
    return SocNot.NotCod;
   }
@@ -3212,7 +3212,7 @@ static long Soc_FavSocialNote (void)
 	   }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_original_post_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_original_post_no_longer_exists);
 
    return SocNot.NotCod;
   }
@@ -3298,7 +3298,7 @@ static long Soc_FavSocialComment (void)
 	   }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_comment_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_comment_no_longer_exists);
 
    /***** Free image *****/
    Img_ImageDestructor (&SocCom.Image);
@@ -3424,7 +3424,7 @@ static long Soc_UnshareSocialNote (void)
 	   }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_original_post_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_original_post_no_longer_exists);
 
    return SocNot.NotCod;
   }
@@ -3508,7 +3508,7 @@ static long Soc_UnfavSocialNote (void)
 	   }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_original_post_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_original_post_no_longer_exists);
 
    return SocNot.NotCod;
   }
@@ -3592,7 +3592,7 @@ static long Soc_UnfavSocialComment (void)
 	   }
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_comment_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_comment_no_longer_exists);
 
    /***** Free image *****/
    Img_ImageDestructor (&SocCom.Image);
@@ -3652,7 +3652,7 @@ static void Soc_RequestRemovalSocialNote (void)
 	{
 	 /***** Show question and button to remove social note *****/
 	 /* Start alert */
-	 Lay_ShowAlertAndButton1 (Lay_QUESTION,Txt_Do_you_really_want_to_remove_the_following_post);
+	 Ale_ShowAlertAndButton1 (Ale_QUESTION,Txt_Do_you_really_want_to_remove_the_following_post);
 
 	 /* Show social note */
 	 Soc_WriteSocialNote (&SocNot,
@@ -3662,17 +3662,17 @@ static void Soc_RequestRemovalSocialNote (void)
 	 /* End alert */
 	 Gbl.Social.NotCod = SocNot.NotCod;	// Social note to be removed
 	 if (Gbl.Usrs.Other.UsrDat.UsrCod > 0)
-	    Lay_ShowAlertAndButton2 (ActRemSocPubUsr,"timeline",
+	    Ale_ShowAlertAndButton2 (ActRemSocPubUsr,"timeline",
 	                             Soc_PutParamsRemoveSocialNote,
 				     Lay_REMOVE_BUTTON,Txt_Remove);
 	 else
-	    Lay_ShowAlertAndButton2 (ActRemSocPubGbl,NULL,
+	    Ale_ShowAlertAndButton2 (ActRemSocPubGbl,NULL,
 	                             Soc_PutParamsRemoveSocialNote,
 				     Lay_REMOVE_BUTTON,Txt_Remove);
 	}
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_original_post_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_original_post_no_longer_exists);
   }
 
 /*****************************************************************************/
@@ -3745,11 +3745,11 @@ static void Soc_RemoveSocialNote (void)
 	 Soc_RemoveASocialNoteFromDB (&SocNot);
 
 	 /***** Message of success *****/
-	 Lay_ShowAlert (Lay_SUCCESS,Txt_Post_removed);
+	 Ale_ShowAlert (Ale_SUCCESS,Txt_Post_removed);
 	}
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_original_post_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_original_post_no_longer_exists);
   }
 
 /*****************************************************************************/
@@ -3990,7 +3990,7 @@ static void Soc_RequestRemovalSocialComment (void)
 	{
 	 /***** Show question and button to remove social comment *****/
 	 /* Start alert */
-	 Lay_ShowAlertAndButton1 (Lay_QUESTION,Txt_Do_you_really_want_to_remove_the_following_comment);
+	 Ale_ShowAlertAndButton1 (Ale_QUESTION,Txt_Do_you_really_want_to_remove_the_following_comment);
 
 	 /* Show social comment */
 	 Soc_WriteSocialComment (&SocCom,
@@ -4000,17 +4000,17 @@ static void Soc_RequestRemovalSocialComment (void)
 	 /* End alert */
 	 Gbl.Social.PubCod = SocCom.PubCod;	// Social publishing to be removed
 	 if (Gbl.Usrs.Other.UsrDat.UsrCod > 0)
-	    Lay_ShowAlertAndButton2 (ActRemSocComUsr,"timeline",
+	    Ale_ShowAlertAndButton2 (ActRemSocComUsr,"timeline",
 	                             Soc_PutParamsRemoveSocialCommment,
 				     Lay_REMOVE_BUTTON,Txt_Remove);
 	 else
-	    Lay_ShowAlertAndButton2 (ActRemSocComGbl,NULL,
+	    Ale_ShowAlertAndButton2 (ActRemSocComGbl,NULL,
 	                             Soc_PutParamsRemoveSocialCommment,
 				     Lay_REMOVE_BUTTON,Txt_Remove);
 	}
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_comment_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_comment_no_longer_exists);
 
    /***** Free image *****/
    Img_ImageDestructor (&SocCom.Image);
@@ -4088,11 +4088,11 @@ static void Soc_RemoveSocialComment (void)
 	 Soc_RemoveASocialCommentFromDB (&SocCom);
 
 	 /***** Message of success *****/
-	 Lay_ShowAlert (Lay_SUCCESS,Txt_Comment_removed);
+	 Ale_ShowAlert (Ale_SUCCESS,Txt_Comment_removed);
 	}
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_The_comment_no_longer_exists);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_comment_no_longer_exists);
 
    /***** Free image *****/
    Img_ImageDestructor (&SocCom.Image);
diff --git a/swad_statistic.c b/swad_statistic.c
index 2241f1bf..db516679 100644
--- a/swad_statistic.c
+++ b/swad_statistic.c
@@ -601,7 +601,7 @@ void Sta_AskShowCrsHits (void)
         }
      }
    else	// No teachers nor students found
-      Lay_ShowAlert (Lay_WARNING,Txt_No_teachers_or_students_found);
+      Ale_ShowAlert (Ale_WARNING,Txt_No_teachers_or_students_found);
 
    /***** End frame *****/
    Lay_EndRoundFrame ();
@@ -954,7 +954,7 @@ static void Sta_ShowHits (Sta_GlobalOrCourseAccesses_t GlobalOrCourse)
 	     (Gbl.Stat.CountType == Sta_DISTINCT_USRS ||
 	      Gbl.Stat.CountType == Sta_CLICKS_PER_USR))
 	   {
-	    Lay_ShowAlert (Lay_WARNING,Txt_There_is_no_knowing_how_many_users_not_logged_have_accessed);
+	    Ale_ShowAlert (Ale_WARNING,Txt_There_is_no_knowing_how_many_users_not_logged_have_accessed);
 	    Usr_UsrDataDestructor (&UsrDat);
 	    return;
 	   }
@@ -990,7 +990,7 @@ static void Sta_ShowHits (Sta_GlobalOrCourseAccesses_t GlobalOrCourse)
 	 /* Check the number of users whose clicks will be shown */
 	 if (!Usr_CountNumUsrsInListOfSelectedUsrs ())	// If there are no users selected...
 	   {					// ...write warning message and show the form again
-	    Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_users);
+	    Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_users);
 	    return;
 	   }
 	 break;
@@ -1014,7 +1014,7 @@ static void Sta_ShowHits (Sta_GlobalOrCourseAccesses_t GlobalOrCourse)
      {
       sprintf (Gbl.Alert.Txt,Txt_The_date_range_must_be_less_than_or_equal_to_X_days,
 	       Cfg_DAYS_IN_RECENT_LOG);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);	// ...write warning message and show the form again
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);	// ...write warning message and show the form again
       return;
      }
 
@@ -1428,7 +1428,7 @@ static void Sta_ShowHits (Sta_GlobalOrCourseAccesses_t GlobalOrCourse)
 
    /***** Count the number of rows in result *****/
    if (NumRows == 0)
-      Lay_ShowAlert (Lay_INFO,Txt_There_are_no_accesses_with_the_selected_search_criteria);
+      Ale_ShowAlert (Ale_INFO,Txt_There_are_no_accesses_with_the_selected_search_criteria);
    else
      {
       /***** Put the table with the clicks *****/
diff --git a/swad_string.c b/swad_string.c
index b0e62b1b..0271a737 100644
--- a/swad_string.c
+++ b/swad_string.c
@@ -944,7 +944,7 @@ void Str_SetDecimalPointToUS (void)
   {
    if (!setlocale (LC_NUMERIC,"en_US.utf8"))	// To get/print the floating point as a dot
       if (Gbl.Layout.HTMLStartWritten)
-         Lay_ShowAlert (Lay_ERROR,"Can not set locale to en_US.");
+         Ale_ShowAlert (Ale_ERROR,"Can not set locale to en_US.");
   }
 
 /*****************************************************************************/
@@ -956,7 +956,7 @@ void Str_SetDecimalPointToLocal (void)
    // TODO: this should be internationalized!!!!!!!
    if (!setlocale (LC_NUMERIC,"es_ES.utf8"))	// Return to local system
       if (Gbl.Layout.HTMLStartWritten)
-         Lay_ShowAlert (Lay_ERROR,"Can not set locale to es_ES.");
+         Ale_ShowAlert (Ale_ERROR,"Can not set locale to es_ES.");
   }
 
 /*****************************************************************************/
@@ -2784,7 +2784,7 @@ bool Str_ConvertFilFolLnkNameToValid (char *FileName)
       if (NumAlfanum)
          FileNameIsOK = true;
       else
-         snprintf (Gbl.Alert.Txt,Lay_MAX_BYTES_ALERT,
+         snprintf (Gbl.Alert.Txt,Ale_MAX_BYTES_ALERT,
                    Gbl.FileBrowser.UploadingWithDropzone ? Txt_UPLOAD_FILE_X_invalid_name_NO_HTML :
                 	                                   Txt_UPLOAD_FILE_X_invalid_name,
 		   FileName);
diff --git a/swad_survey.c b/swad_survey.c
index fcb7da85..7d0a4112 100644
--- a/swad_survey.c
+++ b/swad_survey.c
@@ -267,7 +267,7 @@ static void Svy_ListAllSurveys (struct SurveyQuestion *SvyQst)
       Lay_EndTable ();
      }
    else	// No surveys created
-      Lay_ShowAlert (Lay_INFO,Txt_No_surveys);
+      Ale_ShowAlert (Ale_INFO,Txt_No_surveys);
 
    /***** Button to create a new survey *****/
    if (Svy_CheckIfICanCreateSvy ())
@@ -1481,7 +1481,7 @@ void Svy_AskRemSurvey (void)
    Gbl.Svys.SvyCodToEdit = Svy.SvyCod;
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_survey_X,
             Svy.Title);
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            ActRemSvy,NULL,Svy_PutParams,
 			   Lay_REMOVE_BUTTON,Txt_Remove_survey);
 
@@ -1541,7 +1541,7 @@ void Svy_RemoveSurvey (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Survey_X_removed,
             Svy.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show surveys again *****/
    Svy_ListAllSurveys (&SvyQst);
@@ -1574,7 +1574,7 @@ void Svy_AskResetSurvey (void)
    /***** Ask for confirmation of reset *****/
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_reset_the_survey_X,
             Svy.Title);
-   Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 
    /***** Button of confirmation of reset *****/
    Gbl.Svys.SvyCodToEdit = Svy.SvyCod;
@@ -1633,7 +1633,7 @@ void Svy_ResetSurvey (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Survey_X_reset,
             Svy.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show surveys again *****/
    Svy_ListAllSurveys (&SvyQst);
@@ -1667,7 +1667,7 @@ void Svy_HideSurvey (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Survey_X_is_now_hidden,
             Svy.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show surveys again *****/
    Svy_ListAllSurveys (&SvyQst);
@@ -1701,7 +1701,7 @@ void Svy_UnhideSurvey (void)
    /***** Write message to show the change made *****/
    sprintf (Gbl.Alert.Txt,Txt_Survey_X_is_now_visible,
             Svy.Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show surveys again *****/
    Svy_ListAllSurveys (&SvyQst);
@@ -2140,13 +2140,13 @@ void Svy_RecFormSurvey (void)
          NewSurveyIsCorrect = false;
          sprintf (Gbl.Alert.Txt,Txt_Already_existed_a_survey_with_the_title_X,
                   NewSvy.Title);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
         }
      }
    else	// If there is not a survey title
      {
       NewSurveyIsCorrect = false;
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_specify_the_title_of_the_survey);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_specify_the_title_of_the_survey);
      }
 
    /***** Create a new survey or update an existing one *****/
@@ -2229,7 +2229,7 @@ static void Svy_CreateSurvey (struct Survey *Svy,const char *Txt)
    /***** Write success message *****/
    sprintf (Gbl.Alert.Txt,Txt_Created_new_survey_X,
             Svy->Title);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -2269,7 +2269,7 @@ static void Svy_UpdateSurvey (struct Survey *Svy,const char *Txt)
       Svy_CreateGrps (Svy->SvyCod);
 
    /***** Write success message *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_The_survey_has_been_modified);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_The_survey_has_been_modified);
   }
 
 /*****************************************************************************/
@@ -2843,7 +2843,7 @@ static unsigned Svy_GetAnswersQst (long QstCod,MYSQL_RES **mysql_res)
 
    /***** Count number of rows of result *****/
    if (NumRows == 0)
-      Lay_ShowAlert (Lay_ERROR,"Error when getting answers of a question.");
+      Ale_ShowAlert (Ale_ERROR,"Error when getting answers of a question.");
 
    return (unsigned) NumRows;
   }
@@ -2954,7 +2954,7 @@ void Svy_ReceiveQst (void)
               {
                if (ThereIsEndOfAnswers)
                  {
-                  Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_empty_intermediate_answers);
+                  Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_empty_intermediate_answers);
                   Error = true;
                  }
                else
@@ -2966,20 +2966,20 @@ void Svy_ReceiveQst (void)
            {
             if (NumLastAns < 1)
               {
-               Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
+               Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
                Error = true;
               }
            }
         }
       else	// If first answer is empty
         {
-         Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
          Error = true;
         }
      }
    else
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_the_stem_of_the_question);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_the_stem_of_the_question);
       Error = true;
      }
 
@@ -3048,7 +3048,7 @@ void Svy_ReceiveQst (void)
            }
 
       /***** List the questions of this survey, including the new one just inserted into the database *****/
-      Lay_ShowAlert (Lay_SUCCESS,Txt_The_survey_has_been_modified);
+      Ale_ShowAlert (Ale_SUCCESS,Txt_The_survey_has_been_modified);
      }
 
    /***** Free answers *****/
@@ -3266,7 +3266,7 @@ static void Svy_ListSvyQuestions (struct Survey *Svy,struct SurveyQuestion *SvyQ
 	}
      }
    else	// This survey has no questions
-      Lay_ShowAlert (Lay_INFO,Txt_This_survey_has_no_questions);
+      Ale_ShowAlert (Ale_INFO,Txt_This_survey_has_no_questions);
 
    if (Svy->Status.ICanEdit &&	// I can edit
        (!NumQsts ||		// This survey has no questions
@@ -3517,7 +3517,7 @@ void Svy_RequestRemoveQst (void)
    Gbl.Svys.SvyQstCodToEdit = SvyQst.QstCod;
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_question_X,
 	    (unsigned long) (SvyQst.QstInd + 1));
-   Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+   Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                            ActRemSvyQst,NULL,Svy_PutParamsRemoveOneQst,
 			   Lay_REMOVE_BUTTON,Txt_Remove_question);
 
@@ -3567,7 +3567,7 @@ void Svy_RemoveQst (void)
 
    /***** Write message *****/
    sprintf (Gbl.Alert.Txt,"%s",Txt_Question_removed);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Show current survey *****/
    Svy_ShowOneSurvey (SvyCod,&SvyQst,true);
@@ -3593,12 +3593,12 @@ void Svy_ReceiveSurveyAnswers (void)
 
    /***** Check if I have no answered this survey formerly *****/
    if (Svy.Status.IHaveAnswered)
-      Lay_ShowAlert (Lay_WARNING,Txt_You_already_answered_this_survey_before);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_already_answered_this_survey_before);
    else
      {
       /***** Receive and store user's answers *****/
       Svy_ReceiveAndStoreUserAnswersToASurvey (Svy.SvyCod);
-      Lay_ShowAlert (Lay_INFO,Txt_Thanks_for_answering_the_survey);
+      Ale_ShowAlert (Ale_INFO,Txt_Thanks_for_answering_the_survey);
      }
 
    /***** Show current survey *****/
diff --git a/swad_test.c b/swad_test.c
index 59151549..a18d66f2 100644
--- a/swad_test.c
+++ b/swad_test.c
@@ -364,7 +364,7 @@ void Tst_ShowFormAskTst (void)
    else
      {
       /***** Warning message *****/
-      Lay_ShowAlert (Lay_INFO,Txt_No_test_questions);
+      Ale_ShowAlert (Ale_INFO,Txt_No_test_questions);
 
       /***** Button to create a new question *****/
       if (Tst_CheckIfICanEditTests ())
@@ -421,7 +421,7 @@ void Tst_ShowNewTest (void)
          /***** Get questions *****/
          if ((NumRows = Tst_GetQuestionsForTest (&mysql_res)) == 0)	// Query database
            {
-            Lay_ShowAlert (Lay_INFO,Txt_No_questions_found_matching_your_search_criteria);
+            Ale_ShowAlert (Ale_INFO,Txt_No_questions_found_matching_your_search_criteria);
             Tst_ShowFormAskTst ();					// Show the form again
            }
          else
@@ -566,12 +566,12 @@ void Tst_AssessTest (void)
       case Tst_STATUS_ASSESSED:
          sprintf (Gbl.Alert.Txt,Txt_The_test_X_has_already_been_assessed_previously,
                   NumTst);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
          break;
       case Tst_STATUS_ERROR:
          sprintf (Gbl.Alert.Txt,Txt_There_was_an_error_in_assessing_the_test_X,
                   NumTst);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
          break;
      }
   }
@@ -686,7 +686,7 @@ static bool Tst_CheckIfNextTstAllowed (void)
 	       Txt_You_can_not_take_a_new_test_until,
 	       (long) TimeNextTestUTC,
 	       (unsigned) Gbl.Prefs.DateFormat,Txt_Today);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 
       return false;
      }
@@ -1302,7 +1302,7 @@ void Tst_ShowFormAskEditTsts (void)
    else	// No test questions
      {
       /***** Warning message *****/
-      Lay_ShowAlert (Lay_INFO,Txt_No_test_questions);
+      Ale_ShowAlert (Ale_INFO,Txt_No_test_questions);
 
       /***** Button to create a new question *****/
       Tst_PutButtonToAddQuestion ();
@@ -1383,7 +1383,7 @@ void Tst_ShowFormConfig (void)
 
    /***** If current course has tests and pluggable is unknown... *****/
    if (Tst_CheckIfCourseHaveTestsAndPluggableIsUnknown ())
-      Lay_ShowAlert (Lay_WARNING,Txt_Please_specify_if_you_allow_access_to_test_questions_from_mobile_applications);
+      Ale_ShowAlert (Ale_WARNING,Txt_Please_specify_if_you_allow_access_to_test_questions_from_mobile_applications);
 
    /***** Form to configure test *****/
    Tst_ShowFormConfigTst ();
@@ -1462,7 +1462,7 @@ void Tst_RenameTag (void)
      {
       sprintf (Gbl.Alert.Txt,Txt_You_can_not_leave_the_name_of_the_tag_X_empty,
                OldTagTxt);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else			// New tag not empty
      {
@@ -1474,7 +1474,7 @@ void Tst_RenameTag (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_tag_X_has_not_changed,
                   NewTagTxt);
-         Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
         }
       else					// The old and the new tag
 						// are not exactly the same (case sensitively).
@@ -1558,7 +1558,7 @@ void Tst_RenameTag (void)
 	 /***** Write message to show the change made *****/
 	 sprintf (Gbl.Alert.Txt,Txt_The_tag_X_has_been_renamed_as_Y,
 		  OldTagTxt,NewTagTxt);
-	 Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+	 Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 	}
      }
 
@@ -1765,7 +1765,7 @@ static void Tst_ShowFormEditTags (void)
       Lay_EndRoundFrameTable ();
      }
    else
-      Lay_ShowAlert (Lay_INFO,Txt_No_test_questions);
+      Ale_ShowAlert (Ale_INFO,Txt_No_test_questions);
 
    /* Free structure that stores the query result */
    DB_FreeMySQLResult (&mysql_res);
@@ -2171,7 +2171,7 @@ void Tst_ReceiveConfigTst (void)
    DB_QueryREPLACE (Query,"can not save configuration of tests");
 
    /***** Show confirmation message *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_The_test_configuration_has_been_updated);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_The_test_configuration_has_been_updated);
 
    /***** Show again the form to configure test *****/
    Tst_ShowFormConfig ();
@@ -2510,7 +2510,7 @@ static unsigned long Tst_GetQuestionsForEdit (MYSQL_RES **mysql_res)
    NumRows = DB_QuerySELECT (Query,mysql_res,"can not get questions");
 
    if (NumRows == 0)
-      Lay_ShowAlert (Lay_INFO,Txt_No_questions_found_matching_your_search_criteria);
+      Ale_ShowAlert (Ale_INFO,Txt_No_questions_found_matching_your_search_criteria);
 
    return NumRows;
   }
@@ -3014,7 +3014,7 @@ unsigned Tst_GetAnswersQst (long QstCod,MYSQL_RES **mysql_res,bool Shuffle)
             Shuffle ? "RAND(NOW())" :
         	      "AnsInd");
    if (!(NumRows = DB_QuerySELECT (Query,mysql_res,"can not get answers of a question")))
-      Lay_ShowAlert (Lay_ERROR,"Error when getting answers of a question.");
+      Ale_ShowAlert (Ale_ERROR,"Error when getting answers of a question.");
 
    return (unsigned) NumRows;
   }
@@ -4296,7 +4296,7 @@ static bool Tst_GetParamsTst (void)
    /* Check number of tags selected */
    if (Tst_CountNumTagsInList () == 0)	// If no tags selected...
      {					// ...write alert
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_tags);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_tags);
       Error = true;
      }
 
@@ -4310,7 +4310,7 @@ static bool Tst_GetParamsTst (void)
    /* Check number of types of answer */
    if (Tst_CountNumAnswerTypesInList () == 0)	// If no types of answer selected...
      {						// ...write warning alert
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_types_of_answer);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_types_of_answer);
       Error = true;
      }
 
@@ -4323,7 +4323,7 @@ static bool Tst_GetParamsTst (void)
         {
          sprintf (Gbl.Alert.Txt,Txt_The_number_of_questions_must_be_in_the_interval_X,
                   Gbl.Test.Config.Min,Gbl.Test.Config.Max);
-         Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+         Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
          Error = true;
         }
      }
@@ -5507,7 +5507,7 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
         Gbl.Test.Image.Action == Img_ACTION_CHANGE_IMAGE) &&	// Replace existing image by new image
        Gbl.Test.Image.Status != Img_FILE_PROCESSED)
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_Error_receiving_or_processing_image);
+      Ale_ShowAlert (Ale_WARNING,Txt_Error_receiving_or_processing_image);
       return false;
      }
 
@@ -5517,14 +5517,14 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
    /***** A question must have at least one tag *****/
    if (!Gbl.Test.Tags.Num) // There are no tags with text
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_one_tag_for_the_question);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_one_tag_for_the_question);
       return false;
      }
 
    /***** A question must have a stem*****/
    if (!Gbl.Test.Stem.Length)
      {
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_the_stem_of_the_question);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_the_stem_of_the_question);
       return false;
      }
 
@@ -5534,12 +5534,12 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
       case Tst_ANS_INT:
          if (!Gbl.Test.Answer.Options[0].Text)
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_enter_an_integer_value_as_the_correct_answer);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_enter_an_integer_value_as_the_correct_answer);
             return false;
            }
          if (!Gbl.Test.Answer.Options[0].Text[0])
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_enter_an_integer_value_as_the_correct_answer);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_enter_an_integer_value_as_the_correct_answer);
             return false;
            }
          Gbl.Test.Answer.Integer = Tst_GetIntAnsFromStr (Gbl.Test.Answer.Options[0].Text);
@@ -5549,13 +5549,13 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
          if (!Gbl.Test.Answer.Options[0].Text ||
              !Gbl.Test.Answer.Options[1].Text)
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_enter_the_range_of_floating_point_values_allowed_as_answer);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_enter_the_range_of_floating_point_values_allowed_as_answer);
             return false;
            }
          if (!Gbl.Test.Answer.Options[0].Text[0] ||
              !Gbl.Test.Answer.Options[1].Text[0])
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_enter_the_range_of_floating_point_values_allowed_as_answer);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_enter_the_range_of_floating_point_values_allowed_as_answer);
             return false;
            }
          for (i = 0;
@@ -5565,7 +5565,7 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
          if (Gbl.Test.Answer.FloatingPoint[0] >
              Gbl.Test.Answer.FloatingPoint[1])
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_The_lower_limit_of_correct_answers_must_be_less_than_or_equal_to_the_upper_limit);
+            Ale_ShowAlert (Ale_WARNING,Txt_The_lower_limit_of_correct_answers_must_be_less_than_or_equal_to_the_upper_limit);
             return false;
            }
          Gbl.Test.Answer.NumOptions = 2;
@@ -5574,7 +5574,7 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
          if (Gbl.Test.Answer.TF != 'T' &&
              Gbl.Test.Answer.TF != 'F')
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_a_T_F_answer);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_a_T_F_answer);
             return false;
            }
          Gbl.Test.Answer.NumOptions = 1;
@@ -5583,12 +5583,12 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
       case Tst_ANS_MULTIPLE_CHOICE:
          if (!Gbl.Test.Answer.Options[0].Text)		// If the first answer is empty
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
             return false;
            }
          if (!Gbl.Test.Answer.Options[0].Text[0])	// If the first answer is empty
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
             return false;
            }
 
@@ -5601,7 +5601,7 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
                  {
                   if (ThereIsEndOfAnswers)
                     {
-                     Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_empty_intermediate_answers);
+                     Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_empty_intermediate_answers);
                      return false;
                     }
                   NumLastOpt = NumOpt;
@@ -5615,7 +5615,7 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
 
          if (NumLastOpt < 1)
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
             return false;
            }
 
@@ -5626,19 +5626,19 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
                break;
          if (NumOpt > NumLastOpt)
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_mark_an_answer_as_correct);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_mark_an_answer_as_correct);
             return false;
            }
          break;
       case Tst_ANS_TEXT:
          if (!Gbl.Test.Answer.Options[0].Text)		// If the first answer is empty
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_the_first_two_answers);
             return false;
            }
          if (!Gbl.Test.Answer.Options[0].Text[0])  // If the first answer is empty
            {
-            Lay_ShowAlert (Lay_WARNING,Txt_You_must_type_at_least_the_first_answer);
+            Ale_ShowAlert (Ale_WARNING,Txt_You_must_type_at_least_the_first_answer);
             return false;
            }
 
@@ -5651,7 +5651,7 @@ bool Tst_CheckIfQstFormatIsCorrectAndCountNumOptions (void)
                  {
                   if (ThereIsEndOfAnswers)
                     {
-                     Lay_ShowAlert (Lay_WARNING,Txt_You_can_not_leave_empty_intermediate_answers);
+                     Ale_ShowAlert (Ale_WARNING,Txt_You_can_not_leave_empty_intermediate_answers);
                      return false;
                     }
                   Gbl.Test.Answer.NumOptions++;
@@ -5876,13 +5876,13 @@ void Tst_RequestRemoveQst (void)
    sprintf (Gbl.Alert.Txt,Txt_Do_you_really_want_to_remove_the_question_X,
 	    (unsigned long) Gbl.Test.QstCod);
    if (EditingOnlyThisQst)
-      Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+      Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                               ActRemTstQst,NULL,
 			      Tst_PutParamsRemoveOneQst,
 			      Lay_REMOVE_BUTTON,Txt_Remove_question);
    else
      {
-      Lay_ShowAlertAndButton (Lay_QUESTION,Gbl.Alert.Txt,
+      Ale_ShowAlertAndButton (Ale_QUESTION,Gbl.Alert.Txt,
                               ActRemTstQst,NULL,
 			      Tst_PutParamsRemoveQst,
 			      Lay_REMOVE_BUTTON,Txt_Remove_question);
@@ -5956,7 +5956,7 @@ void Tst_RemoveQst (void)
       Lay_ShowErrorAndExit ("The question to be removed does not exist or belongs to another course.");
 
    /***** Write message *****/
-   Lay_ShowAlert (Lay_SUCCESS,Txt_Question_removed);
+   Ale_ShowAlert (Ale_SUCCESS,Txt_Question_removed);
 
    /***** Continue editing questions *****/
    if (!EditingOnlyThisQst)
@@ -6000,7 +6000,7 @@ void Tst_ChangeShuffleQst (void)
             Shuffle ? Txt_The_answers_of_the_question_with_code_X_will_appear_shuffled :
                       Txt_The_answers_of_the_question_with_code_X_will_appear_without_shuffling,
             Gbl.Test.QstCod);
-   Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
 
    /***** Continue editing questions *****/
    if (EditingOnlyThisQst)
@@ -7147,7 +7147,7 @@ void Tst_ShowUsrsTestResults (void)
    else	// If no users are selected...
      {
       // ...write warning alert
-      Lay_ShowAlert (Lay_WARNING,Txt_You_must_select_one_ore_more_users);
+      Ale_ShowAlert (Ale_WARNING,Txt_You_must_select_one_ore_more_users);
       // ...and show again the form
       Tst_SelUsrsToSeeUsrsTestResults ();
      }
diff --git a/swad_test_import.c b/swad_test_import.c
index d5330eed..4f89c9f2 100644
--- a/swad_test_import.c
+++ b/swad_test_import.c
@@ -138,7 +138,7 @@ void TsI_ShowFormImportQstsFromXML (void)
    Lay_StartRoundFrame (NULL,Txt_Import_questions,NULL,Hlp_ASSESSMENT_Tests);
 
    /***** Write help message *****/
-   Lay_ShowAlert (Lay_INFO,Txt_You_need_an_XML_file_containing_a_list_of_questions);
+   Ale_ShowAlert (Ale_INFO,Txt_You_need_an_XML_file_containing_a_list_of_questions);
 
    /***** Write a form to import questions *****/
    Act_FormStart (ActImpTstQst);
@@ -426,7 +426,7 @@ void TsI_ImportQstsFromXML (void)
    if (WrongType)
      {
       sprintf (Gbl.Alert.Txt,Txt_The_file_is_not_X,"xml");
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
    else
      {
@@ -436,7 +436,7 @@ void TsI_ImportQstsFromXML (void)
          /***** Get questions from XML file and store them in database *****/
          TsI_ReadQuestionsFromXMLFileAndStoreInDB (FileNameXMLTmp);
       else
-         Lay_ShowAlert (Lay_WARNING,"Error copying file.");
+         Ale_ShowAlert (Ale_WARNING,"Error copying file.");
      }
   }
 
@@ -669,7 +669,7 @@ static void TsI_ImportQuestionsFromXMLBuffer (const char *XMLBuffer)
       Lay_EndTable ();
      }
    else	// TestElem not found
-      Lay_ShowAlert (Lay_ERROR,"Root element &lt;test&gt; not found.");
+      Ale_ShowAlert (Ale_ERROR,"Root element &lt;test&gt; not found.");
 
    /***** End table *****/
    Lay_EndRoundFrame ();
diff --git a/swad_timetable.c b/swad_timetable.c
index 2840136f..fbe82dff 100644
--- a/swad_timetable.c
+++ b/swad_timetable.c
@@ -545,7 +545,7 @@ void TT_ShowTimeTable (long UsrCod)
    if (Gbl.TimeTable.Config.HoursPerDay)
       TT_DrawTimeTable ();
    else
-      Lay_ShowAlert (Lay_INFO,Txt_The_timetable_is_empty);
+      Ale_ShowAlert (Ale_INFO,Txt_The_timetable_is_empty);
 
    /***** Free internal timetable in memory *****/
    TT_FreeTimeTable ();
@@ -1026,7 +1026,7 @@ static void TT_FillTimeTableFromDB (long UsrCod)
    DB_FreeMySQLResult (&mysql_res);
 
    if (TimeTableIsIncomplete)
-      Lay_ShowAlert (Lay_INFO,Txt_Incomplete_timetable_for_lack_of_space);
+      Ale_ShowAlert (Ale_INFO,Txt_Incomplete_timetable_for_lack_of_space);
   }
 
 /*****************************************************************************/
diff --git a/swad_user.c b/swad_user.c
index 2d9aa07d..fa6efcf4 100644
--- a/swad_user.c
+++ b/swad_user.c
@@ -225,12 +225,12 @@ void Usr_InformAboutNumClicksBeforePhoto (void)
    if (Gbl.Usrs.Me.NumAccWithoutPhoto)
      {
       if (Gbl.Usrs.Me.NumAccWithoutPhoto >= Pho_MAX_CLICKS_WITHOUT_PHOTO)
-         Lay_ShowAlert (Lay_WARNING,Txt_You_must_send_your_photo_because_);
+         Ale_ShowAlert (Ale_WARNING,Txt_You_must_send_your_photo_because_);
       else if (Act_Actions[Gbl.Action.Act].BrowserWindow == Act_THIS_WINDOW)
         {
          sprintf (Message,Txt_You_can_only_perform_X_further_actions_,
                   Pho_MAX_CLICKS_WITHOUT_PHOTO-Gbl.Usrs.Me.NumAccWithoutPhoto);
-         Lay_ShowAlert (Lay_WARNING,Message);
+         Ale_ShowAlert (Ale_WARNING,Message);
 
 	 fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">");
 	 Pho_PutLinkToChangeMyPhoto ();
@@ -1979,7 +1979,7 @@ void Usr_Logout (void)
    extern const char *Txt_The_session_has_been_closed;
 
    /***** Confirmation message *****/
-   Lay_ShowAlert (Lay_INFO,Txt_The_session_has_been_closed);
+   Ale_ShowAlert (Ale_INFO,Txt_The_session_has_been_closed);
 
    /***** Form to log in *****/
    Usr_WriteFormLogin (ActLogIn,NULL);
@@ -2118,10 +2118,10 @@ void Usr_WelcomeUsr (void)
             if (!CongratulateMyBirthday)
                sprintf (Gbl.Alert.Txt,Txt_Welcome_X[Gbl.Usrs.Me.UsrDat.Sex],
                         Gbl.Usrs.Me.UsrDat.FirstName);
-            Lay_ShowAlert (Lay_INFO,Gbl.Alert.Txt);
+            Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
            }
          else
-            Lay_ShowAlert (Lay_INFO,Txt_Welcome[Gbl.Usrs.Me.UsrDat.Sex]);
+            Ale_ShowAlert (Ale_INFO,Txt_Welcome[Gbl.Usrs.Me.UsrDat.Sex]);
 
          /***** Warning to confirm my email address *****/
          if (Gbl.Usrs.Me.UsrDat.Email[0] &&
@@ -2139,7 +2139,7 @@ void Usr_WelcomeUsr (void)
       else
 	 /* The current language is not my preferred language
 	    ==> change automatically to my language */
-         Lay_ShowAlert (Lay_INFO,Txt_Switching_to_LANGUAGE[Gbl.Usrs.Me.UsrDat.Prefs.Language]);
+         Ale_ShowAlert (Ale_INFO,Txt_Switching_to_LANGUAGE[Gbl.Usrs.Me.UsrDat.Prefs.Language]);
      }
   }
 
@@ -2389,7 +2389,7 @@ unsigned Usr_GetParamOtherUsrIDNickOrEMailAndGetUsrCods (struct ListUsrCods *Lis
       /***** String is not a valid user's nickname, email or ID *****/
       sprintf (Gbl.Alert.Txt,Txt_The_ID_nickname_or_email_X_is_not_valid,
 	       Gbl.Usrs.Other.UsrDat.UsrIDNickOrEmail);
-      Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
      }
 
    return ListUsrCods->NumUsrs;
@@ -2492,7 +2492,7 @@ void Usr_ChkUsrAndGetUsrData (void)
 	{
 	 Gbl.Action.Act = ActLogOut;
 	 Tab_SetCurrentTab ();
-	 Lay_ShowAlert (Lay_WARNING,Txt_The_session_has_expired_due_to_inactivity);
+	 Ale_ShowAlert (Ale_WARNING,Txt_The_session_has_expired_due_to_inactivity);
 	 FormLogin.PutForm = true;
 	}
      }
@@ -2806,7 +2806,7 @@ static void Usr_ShowAlertUsrDoesNotExistsOrWrongPassword (void)
 
    // Gbl.Action.Act = ActFrmLogIn;
    // Tab_SetCurrentTab ();
-   Lay_ShowAlert (Lay_WARNING,Txt_The_user_does_not_exist_or_password_is_incorrect);
+   Ale_ShowAlert (Ale_WARNING,Txt_The_user_does_not_exist_or_password_is_incorrect);
   }
 
 /*****************************************************************************/
@@ -2821,7 +2821,7 @@ static void Usr_ShowAlertThereAreMoreThanOneUsr (void)
    Tab_SetCurrentTab ();
    sprintf (Gbl.Alert.Txt,Txt_There_are_more_than_one_user_with_the_ID_X_Please_type_a_nick_or_email,
 	    Gbl.Usrs.Me.UsrIdLogin);
-   Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -3020,7 +3020,7 @@ void Usr_ShowFormsLogoutAndRole (void)
       sprintf (Gbl.Alert.Txt,Txt_You_are_now_LOGGED_IN_as_X,
 	       Txt_logged[Gbl.Usrs.Me.UsrDat.Sex],
 	       Txt_ROLES_SINGUL_abc[Gbl.Usrs.Me.LoggedRole][Gbl.Usrs.Me.UsrDat.Sex]);
-      Lay_ShowAlert (Lay_SUCCESS,Gbl.Alert.Txt);
+      Ale_ShowAlert (Ale_SUCCESS,Gbl.Alert.Txt);
      }
 
    /***** Start frame *****/
@@ -5109,7 +5109,7 @@ static void Usr_ShowWarningListIsTooBig (unsigned NumUsrs)
 
    sprintf (Gbl.Alert.Txt,Txt_The_list_of_X_users_is_too_large_to_be_displayed,
             NumUsrs);
-   Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+   Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
   }
 
 /*****************************************************************************/
@@ -5257,7 +5257,7 @@ bool Usr_GetListMsgRecipientsWrittenExplicitelyBySender (bool WriteErrorMsgs)
 		    {
 		     sprintf (Gbl.Alert.Txt,Txt_There_is_no_user_with_nickname_X,
 			      UsrIDNickOrEmail);
-		     Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		     Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 		    }
 		  Error = true;
 		 }
@@ -5276,7 +5276,7 @@ bool Usr_GetListMsgRecipientsWrittenExplicitelyBySender (bool WriteErrorMsgs)
 		    {
 		     sprintf (Gbl.Alert.Txt,Txt_There_is_no_user_with_email_X,
 			      UsrIDNickOrEmail);
-		     Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		     Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 		    }
 		  Error = true;
 		 }
@@ -5304,7 +5304,7 @@ bool Usr_GetListMsgRecipientsWrittenExplicitelyBySender (bool WriteErrorMsgs)
 			  {
 			   sprintf (Gbl.Alert.Txt,Txt_There_are_more_than_one_user_with_the_ID_X_Please_type_a_nick_or_email,
 				    UsrIDNickOrEmail);
-			   Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+			   Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
 			  }
 			Error = true;
 		       }
@@ -5315,7 +5315,7 @@ bool Usr_GetListMsgRecipientsWrittenExplicitelyBySender (bool WriteErrorMsgs)
 		       {
 			sprintf (Gbl.Alert.Txt,Txt_There_is_no_user_with_ID_nick_or_email_X,
 				 UsrIDNickOrEmail);
-			Lay_ShowAlert (Lay_ERROR,Gbl.Alert.Txt);
+			Ale_ShowAlert (Ale_ERROR,Gbl.Alert.Txt);
 		       }
 		     Error = true;
 		    }
@@ -5326,7 +5326,7 @@ bool Usr_GetListMsgRecipientsWrittenExplicitelyBySender (bool WriteErrorMsgs)
 		    {
 		     sprintf (Gbl.Alert.Txt,Txt_The_ID_nickname_or_email_X_is_not_valid,
 			      UsrIDNickOrEmail);
-		     Lay_ShowAlert (Lay_WARNING,Gbl.Alert.Txt);
+		     Ale_ShowAlert (Ale_WARNING,Gbl.Alert.Txt);
 		    }
 		  Error = true;
 		 }
@@ -8096,7 +8096,7 @@ void Usr_ShowWarningNoUsersFound (Rol_Role_t Role)
   {
    extern const char *Txt_No_users_found[Rol_NUM_ROLES];
 
-   Lay_ShowAlert (Lay_INFO,Txt_No_users_found[Role]);
+   Ale_ShowAlert (Ale_INFO,Txt_No_users_found[Role]);
   }
 
 /*****************************************************************************/
@@ -8491,7 +8491,7 @@ void Usr_PrintUsrQRCode (void)
       Lay_EndRoundFrame ();
      }
    else
-      Lay_ShowAlert (Lay_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
+      Ale_ShowAlert (Ale_WARNING,Txt_User_not_found_or_you_do_not_have_permission_);
   }
 
 /*****************************************************************************/
diff --git a/swad_zip.c b/swad_zip.c
index 6eecb965..9ca53c2a 100644
--- a/swad_zip.c
+++ b/swad_zip.c
@@ -432,9 +432,9 @@ static void ZIP_CompressFolderIntoZIP (void)
    UncompressedSize = ZIP_CloneDir (Path,PathCompression,Gbl.FileBrowser.Priv.FullPathInTree);
 
    if (UncompressedSize == 0)					// Nothing to compress
-      Lay_ShowAlert (Lay_WARNING,Txt_The_folder_is_empty);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_folder_is_empty);
    else if (UncompressedSize > ZIP_MAX_SIZE_UNCOMPRESSED)	// Uncompressed size is too big
-      Lay_ShowAlert (Lay_WARNING,Txt_The_contents_of_the_folder_are_too_big);
+      Ale_ShowAlert (Ale_WARNING,Txt_The_contents_of_the_folder_are_too_big);
    else
      {
       /***** Change to directory of the clone folder