.container{width:100%; margin:0 auto;position:relative;}


.nav{
	position: abolute;
	z-index: 9;
	width: 100%;
	left: 0px;
	top: 0px;
	position: absolute;
	
}

.nav{
	background: url(../xjltu/aboutbj.jpg) top center repeat-x;
	padding-top: 0px;
	height: auto;
	overflow: hidden;
	position: abolute;
	z-index: 9;
	left: 0px;
	top: 500px;
	position: absolute;
}

.nav.selected{position:fixed;width:100%;left:0px;top:84px; }


.nav .menu{width:1002px;height:40px;float:left;overflow:hidden;position:relative;}

.nav .menu li{float:left; padding-left:20px; padding-right:20px; height:40px; line-height:40px;}


.nav .menu li a{color:#333;font-size:14px;  height:40px;display:block;line-height:40px;text-align:center;}

.nav .menu li a span{display:block;height:40px;text-align:center; }

.nav .menu li a em{display:block;height:40px;text-align:center;  }

.nav .menu li a:hover{margin-top:-40px;}

/*.nav .menu li a.selected{margin-top:-80px;}*/

.nav .menu li.current a{margin-top:-40px;}
.nav .menu li.back{position:absolute;left:0px;bottom:0px;width:0px;height:0px;}