.about_bar{
	width:393px;
	height:490px;
	background:#d8d9db;	
}
.about_bar .text
{
    overflow:auto;
    height:120px;
	line-height:180%;
	padding:20px;	
	color:#545358;
}

.about_adver{
	width:674px;
	height:490px;
	position:relative;
	overflow:hidden;	
	cursor:pointer;
}
.about_adver .big li{
	width:674px;
	height:490px;
	display:none;
}
.about_adver .big .show{
	display:block;	
}
.about_adver .btn{
	width:674px;
	height:7px;
	position:absolute;
	left:0;
	bottom:30px;
	text-align:center;	
	z-index:10;
}
.about_adver .btn span{
	display:inline-block;
	width:7px;	
	height:7px;
	font-size:1px;
	background:url("../images/adver_btn.png") no-repeat;
	+margin:0 3px;
}
.about_adver .btn .hover{
	background:url("../images/adver_btn_h.png") no-repeat;	
}
.about_adver .c_btn{
	width:96px;
	height:90px;
	position:absolute;
	top:200px;
	z-index:10;
	display:none;
}
.about_adver .pre{
	left:0;
	background:url("../images/adver_pre.png") no-repeat;	
}
.about_adver .next{
	right:0;
	background:url("../images/adver_next.png") no-repeat;	
}