/*banner 样式*/
.banner {position:absolute;width:100%;}
#banner li{position:absolute;width:100%;top:0;left:0;display:none;}	
#banner li img{width:100%;}

#banner li:first-child{
	display:block;
}

.bannerbg{position:relative;z-index:10;}
#leftBtn{left:0;background:url(../images/leftbtn.png) no-repeat center center ;}

#rightBtn{right:0;background:url(../images/rightbtn.png) no-repeat center center;}
#rightBtn ,#leftBtn{position:absolute;top:40%;width:40px;height:125px;display:block;opacity:0.5;filter:alpha(opacity=50);z-index:100; cursor:pointer;}