/*首页广告*/
div.home_3D_ad{
	position:relative;
	width:628px;
	margin:0 auto;
	z-index:100;
}
div.home_3D_ad img{
	display:block;
}
div.home_3D_ad .adv{
	position:absolute;
	top:0;
	z-index:200;
}
div.home_3D_ad .adv a.close{
	position:absolute;
	top:15px;
	right:17px;
}
div.home_3D_ad .adv a.close_button{
	position:absolute;
	bottom:9px;
	right:270px;
	background:#b5e2f9;
	padding:0px 15px;
	font-weight:bold;
	font-size:18px;
}
#mask {
	z-index:90;
	position:absolute;
	top:0px;
	left:0px;
	background-color: black;
	height:1056px;
	width:100%;
	opacity:0.7;
	filter: Alpha(opacity=50);
}