#enlarge {padding:0; margin:4em auto; list-style-type:none; width:960px; height:80px;}

#enlarge li {

display:block; 
float:left; 
width:160px; 
height:160px; 
position:relative;}

#enlarge li a {display:block; width:100px; height:90px; background:transparent; overflow:hidden; position:relative;}

#enlarge li a img {width:100%; height:100%; border:0px none;}

#enlarge li a:hover {position:absolute; left:-20px; top:-20px; width:240px; height:200px; z-index:100;}