.zoomdiv{
 position: absolute;
 background: #ffffff;
 border:1px solid #CCCCCC;
 display:none;
 text-align: center; 
 overflow: hidden;
 display:none;
}
.zoomup{
 background:#c0c0c0;
 display:none;
 filter:alpha(opacity=50);
 opacity:.5;
 cursor:move;
 position:absolute;
 top:0;
 left:0;
 width:280px;
 height:280px;
 
}