.top_banner{ margin:0 auto; width:100%; height:300px; position:relative}
.top_banner img{ position:absolute; right:0px; top:18px}
.a_show_bg {

}
.bg_ban_m{display:block;width:100%; height:100%;}



.bg_l { position:absolute; left:0px; top:0px;height:0px; display:none;}
.bg_r { position:absolute; right:0px; top:0px;height:0px; display:none;}
.bg_ban_cls{ position:absolute; right:0px; bottom:0px;width:16px; height:16px;z-index:9999999;}
.bg_ban_cls a{
	display:block;
	width:16px;
	height:16px;
	background-image: url(http://hq.news.cn/hq/images/close-1.gif);
	background-repeat: no-repeat;
	background-position: left top;
}
.bg_ban_cls a:hover{background:url('http://hq.news.cn/hq/images/close-2.gif'); no-repeat}