﻿.ui-widget-overlay{ 

opacity:0.75; 
background:black;
position: absolute;
top: 0pt;
left: 0pt;
width: 100%;
height: 100%;
 } 
 
 .ui-widget-header 
 {
 background-image: url(images/dialogheader.png);
 }
 
 .ui-dialog .ui-dialog-titlebar-close { display: none; }