body{margin:0;padding:0;}
.content{width:1200px;height:1000px;margin:0 auto;}

.top_banner{
filter: grayscale(1)!important;
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
}
.top_banner{ margin:0 auto; width:1200px; height:445px; position:relative}
.top_banner img{ position:absolute; right:0px; top:18px}
.a_show_bg {
	background-repeat: no-repeat;
	font-family: "ËÎÌå";
	font-size: 12px;
	font-weight: normal;
	margin-left: 6px;
}
.bg_ban_m{display:block;width:1200px; height:445px;}
.bg_l {display:block; position:absolute; left:0px; top:0px;height:445px}
.bg_r {display:block; position:absolute; right:0px; top:0px;height:445px}