#mask {
	width:500px;
	height:375px;
	overflow:hidden;
/* 	border:1px solid #666; */
	position:relative;
	}
#folio {
	position:absolute;
	top:0;
	left:0;
	width:1200px;
	float:left;
}
.col {
	display:block;
	width:500px;
	height:375px;
/* 	float:left; */
	}
.site {
	float:left;
}