/* Sample 1*/
#box1{
	position:absolute;
}
#box1 span{
	display:block;
	float:left;
	clear:none;
	margin:0 
}

.mask1{
	position:relative;
	width:690px;
	height:270px;
	overflow:hidden;
	border:0;
	margin:0 auto;
	float:left;
	clear:right
}

span img{
	display:block;
	border:none;
	float:left;
	margin:0;
	padding:0
}