.home_banner{
	display: block;
	width: 298px;
	height: 215px;
	overflow: hidden;
	position: relative;
	right: 14px;
}
.home_banner span{
	display: block;
	width: 298px;
	height: 215px;
	position: absolute;
	top: 0;
	left: 0;
	background: url(../images/home_banner.jpg) no-repeat top left;
}
.home_banner:hover span{
	display: block;
	width: 298px;
	height: 215px;
	position: absolute;
	top: 0;
	left: 0;
	background: url(../images/home_banner.jpg) no-repeat 0 -215px;
}