Dialog: Don't set specific dimensions on the overlay - let it expand based on 100% dimensions. Fixes #3623 - Opening a Modal Dialog shows a horizontal scroll bar.

Author: scottgonzalez

ui/jquery.ui.dialog.js

@@ -706,11 +706,7 @@ $.extend($.ui.dialog.overlay, {
 		}
 
 		var $el = (this.oldInstances.pop() || $('<div></div>').addClass('ui-widget-overlay'))
-			.appendTo(document.body)
-			.css({
-				width: this.width(),
-				height: this.height()
-			});
+			.appendTo(document.body);
 
 		if ($.fn.bgiframe) {
 			$el.bgiframe();