* {margin:0; padding:0}
.sm {list-style:none; width:900px; height:600px; display:block; overflow:hidden}
.sm li {float:left; display:inline; overflow:hidden}
#wrapper {
	position: absolute; 
	width: 800px;
	margin-left: -400px;
 	left: 50%;
	height: 600px;
	margin-top: -300px; 
	top: 50%;
	}
a img {
	border-top-width: 0px;
	border-right-width: 0px;
	border-bottom-width: 0px;
	border-left-width: 0px;
	border-top-style: none;
	border-right-style: none;
	border-bottom-style: none;
	border-left-style: none;
}