#shade_overlay
{
     position: fixed;
     left: 0px;
     top: 0px;
     width:100%;
     height:100%;
     padding: 0px 0px 0px 0px;
     margin: 0px 0px 0px 0px;
     text-align:center;
     z-index:1000;
     
     background: black; 
     opacity: 0.5;
     filter: alpha(opacity=50); 
     display:block;
}