.zoom_visibile_mozz{

position:absolute; 
width:720px;
height:540px;
z-index:500;
left: 50%;
margin-left:-360;

visibility:visible;





}
.zoom_visibile_exp{



position:absolute; 
width:720px;
height:540px;
z-index:500; 
left: 50%;
margin-left:-370;

display:inline;



}