.overlay {
    
    /* no dimensions needed */
	
	/* initially overlay is hidden */
	display:none;
	
	/* some padding to layout nested elements nicely  */
	padding:1em;
	margin: 1em;
	
	background-color:#fff;
}
 
div.overlaybg {
    background-color: #909090;
}

div.overlaybg div.close { 
    background-image:url(/ui/images/buttons/overlay-close_36x36.png); 
    position:absolute; 
    left:-17px; 
    top:-17px; 
    cursor:pointer; 
    height:35px; 
    width:35px; 
}