#overlay { 
 position: absolute;
 top: 0; 
 left: 0;
 z-index: 90; 
 width: 100%;
 height: 500px; 
 background-color: #000000;
}
#ipop {	
 position: absolute;	
 left: 0; 
 width: 100%; 
 z-index: 100; 
 line-height: 0;
} 	
#icontent {
 position: relative;
 line-height: 1em;
 margin: 0px auto;
 background: #ffffff;
 width: 990px;
 height: 500px;
 padding: 0px;
}