/* Sample 1*/
#box1{
	position:absolute;
	left: 1px;
	top: 2px;
}
#box1 span{
	display:block;
	float:left;
}

.mask1{
	position:relative;
	width:903px;
	height:342px;
	overflow:hidden;
}

span img{
	display:block;
	border:none;
}