#center-square-shade {
 background:#000000;
 float:left;
 opacity:0;
 position:absolute;
 top:0;
 left:0;
 width:100%;
 height:100%;
 z-index:1000;
}
#center-square {
 background:#fff url('/images/webapps/loading.gif') no-repeat center center;
 position:absolute;
 margin-left:-110px;
 top:20%;
 left:50%;
 width:200px;
 height:200px;
 padding:10px;
 z-index:10000;
}
#center-square .close {
 float:right;
 padding:6px;
}