.pergo {
	margin-top:10px;
	position:relative;
	width:435px;
	height:340px;
	overflow:hidden;
	background:#ddf;
	margin-bottom:10px;
}

.porgo {
	position:absolute;
	overflow:hidden;
	width:435px;
	height:340px;
	left:0px;
	top:0px;
}