Add option to set html tag for dialog modal title

Author: rpkoller

ui/widgets/dialog.js

@@ -81,6 +81,7 @@ $.widget( "ui.dialog", {
 		resizable: true,
 		show: null,
 		title: null,
+		uiDialogTitleTagName: "span",
 		width: 300,
 
 		// Callbacks
@@ -437,7 +438,7 @@ $.widget( "ui.dialog", {
 			}
 		} );
 
-		uiDialogTitle = $( "<span>" ).uniqueId().prependTo( this.uiDialogTitlebar );
+		uiDialogTitle = $( "<" + this.options.uiDialogTitleTagName + ">" ).uniqueId().prependTo( this.uiDialogTitlebar );
 		this._addClass( uiDialogTitle, "ui-dialog-title" );
 		this._title( uiDialogTitle );