div.banner336x280 div.frame {
 	width:334px;
 	height:278px;
 	position:absolute; 
	z-index:1;
	border:1px solid #eee;
}
div.banner336x280 {
 	width:336px;
 	height:280px;
 	position:relative;
 	z-index:2;
}