* html .modal-overlay  
{  
    position: absolute;  
    height: expression(document.body.scrollHeight > document.body.offsetHeight ? document.body.scrollHeight : document.body.offsetHeight + 'px');  
}  
* html .modal-window  
{  
    position:absolute;  
}  
.modal-overlay  
{  
    position:fixed;  
    top:0;  
    right:0;  
    bottom:0;  
    left:0;  
    height:100%;  
    width:100%;  
    margin:0;  
    padding:0;  
    background:#000;  
    opacity:.75;  
    filter: alpha(opacity=75);  
    -moz-opacity: 0.75;  
    z-index:101;  
}  
.modal-window  
{  
    position:fixed;  
    top:50%;  
    left:50%;  
    margin:0;  
    padding:0;  
    z-index:102; 
	background: #f0e04c; 
}