#ad_banner{
	display:none;
}
	#ad_banner_disp{
		width:100%;
		height:165px;
		overflow:hidden;
		position:relative;
	}
	#ad_banner_disp #ad_banner{
		display:block;
		width:auto;
		height:165px;
		position:absolute;
		top:0;
		left:50%;
		margin-left:0px;
	}
	#ad_banner_disp #ad_banner li{
		width:400px;
		height:165px;
		float:left;
		margin:0 20px 0 0;
		overflow:hidden;
	}