#focus {width:785px; height:250px; overflow:hidden; position:relative;}
#focus ul {height:300px; position:absolute;}
#focus ul li {float:left; width:785px; height:300px; overflow:hidden; position:relative; background:#000;}
#focus ul li div {position:absolute; overflow:hidden;}
#focus .btn {position:absolute; width:170px; height:14px; right:0; bottom:10px; padding-left:10px; z-index:2999; }
#focus .btn span {display:inline-block;_display:inline;_zoom:1; float:left; width:10px; line-height:10px; height:10px; margin-right:10px; cursor:pointer; background:#fff; overflow:hidden; font-size:0px; }
#focus .btn span.on {background:#317ee7;}