/* focus */ 
#focus{width:1100px;height:100px;overflow:hidden;position:relative;margin: 7px auto;} 
#focus ul{height:380px;position:absolute;} 
#focus ul li{float:left;width:1100px;height:100px;overflow:hidden;position:relative;background:#000;} 
#focus ul li div{position:absolute;overflow:hidden;} 
#focus .btnBg{position:absolute;width:800px;height:20px;left:0;bottom:0;background:#000;} 
#focus .btn{position:absolute;width:780px;height:10px;padding:5px 10px;right:0;bottom:0;text-align:right;} 
#focus .btn span{display:inline-block;_display:inline;_zoom:1;width:50px;height:4px;_font-size:0;margin-left:5px;cursor:pointer;background:#fff;margin-bottom: 0.5rem;} 
#focus .btn span.on{background:#fff;} 
#focus .preNext{width:45px;height:100px;position:absolute;top:0px;background:url(../images/sprite.png) no-repeat 0 0;cursor:pointer;} 
#focus .pre{left:0;} 
#focus .next{right:0;background-position:right top;