.bg_stock {
	background-image: url(../images/bg_stock.jpg);
	background-repeat: no-repeat;
	background-position: bottom;
}
.bg_area {
	background-image: url(../cn/4operation/images/bg_jiao.jpg);
	background-repeat: no-repeat;
	background-position: left bottom;
}
.bg_map {
	background-image: url(../cn/map/images/bg_map.jpg);
	background-repeat: no-repeat;
	background-position: center bottom;
}