diff --git a/swad_HTML.c b/swad_HTML.c
index 08f89b00..cded6a4d 100644
--- a/swad_HTML.c
+++ b/swad_HTML.c
@@ -915,6 +915,12 @@ void HTM_INPUT_FILE (const char *Accept,bool SubmitOnChange)
    fprintf (Gbl.F.Out," />");
   }
 
+void HTM_INPUT_BUTTON (const char *Name,const char *Value,const char *Attr)
+  {
+   fprintf (Gbl.F.Out,"<input type=\"button\" name=\"%s\" value=\"%s\"%s />",
+	    Name,Value,Attr);
+  }
+
 /*****************************************************************************/
 /********************************* Text areas ********************************/
 /*****************************************************************************/
diff --git a/swad_HTML.h b/swad_HTML.h
index 5c07a37c..5829f4c9 100644
--- a/swad_HTML.h
+++ b/swad_HTML.h
@@ -96,6 +96,7 @@ void HTM_INPUT_EMAIL (const char *Name,unsigned MaxLength,const char *Value,
 void HTM_INPUT_URL (const char *Name,const char *Value,bool SubmitOnChange,
 	            const char *fmt,...);
 void HTM_INPUT_FILE (const char *Accept,bool SubmitOnChange);
+void HTM_INPUT_BUTTON (const char *Name,const char *Value,const char *Attr);
 
 void HTM_TEXTAREA_Begin (const char *fmt,...);
 void HTM_TEXTAREA_End (void);
diff --git a/swad_changelog.h b/swad_changelog.h
index b8fc98b5..d4bdabae 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -487,7 +487,7 @@ enscript -2 --landscape --color --file-align=2 --highlight --line-numbers -o - *
 En OpenSWAD:
 ps2pdf source.ps destination.pdf
 */
-#define Log_PLATFORM_VERSION	"SWAD 19.51.11 (2019-11-04)"
+#define Log_PLATFORM_VERSION	"SWAD 19.51.12 (2019-11-04)"
 #define CSS_FILE		"swad19.47.css"
 #define JS_FILE			"swad19.39.js"
 /*
@@ -495,6 +495,7 @@ ps2pdf source.ps destination.pdf
 // TODO: Impedir la creación y edición de proyectos si no son editables.
 // TODO: Importante: filtrar proyectos por usuarios (igual que en trabajos o en asistencia)
 
+	Version 19.51.12: Nov 04, 2019	Code refactoring in HTML inputs. (245873 lines)
 	Version 19.51.11: Nov 04, 2019	Code refactoring in HTML inputs. (245868 lines)
 	Version 19.51.10: Nov 04, 2019	Code refactoring in HTML inputs. (245971 lines)
 	Version 19.51.9:  Nov 04, 2019	Code refactoring in HTML inputs. (245974 lines)
diff --git a/swad_date.c b/swad_date.c
index 9b050806..3c372400 100644
--- a/swad_date.c
+++ b/swad_date.c
@@ -454,12 +454,10 @@ void Dat_PutFormStartEndClientLocalDateTimesWithYesterdayToday (bool SetHMS00000
 
    /***** "Yesterday" and "Today" buttons *****/
    HTM_TD_Begin ("rowspan=\"2\" class=\"LM\"");
-   fprintf (Gbl.F.Out,"<input type=\"button\" name=\"Yesterday\" value=\"%s\""
-                      " onclick=\"setDateToYesterday('Start','End');\" />",
-	    Txt_Yesterday);
-   fprintf (Gbl.F.Out,"<input type=\"button\" name=\"Today\" value=\"%s\""
-                      " onclick=\"setDateToToday('Start','End');\" />",
-            Txt_Today);
+   HTM_INPUT_BUTTON ("Yesterday",Txt_Yesterday,
+		     "onclick=\"setDateToYesterday('Start','End');\"");
+   HTM_INPUT_BUTTON ("Today",Txt_Today,
+		     "onclick=\"setDateToToday('Start','End');\"");
    HTM_TD_End ();
 
    HTM_TR_End ();