.focus {width:100%; height:470px; overflow:hidden; position:relative;margin-top: 5px;}
.focus ul {width: 100%;height:470px; position:absolute;white-space:nowrap;}
.focus ul li {width:100%; height:470px; overflow:hidden; position:relative; background:#000;display: inline-block;}
.focus ul li a{display: block;width: 100%;height: 100%;}
.focus ul li div {position:absolute; overflow:hidden;}
.focus .btnBg {position:absolute; width:100%; height:20px; left:0; bottom:0; background:#000; display:none;}
.focus .btn {position:absolute; width:100%; height:23px; padding:0px 10px 0px 10px; right:0; bottom:6px; text-align:center;}
.focus .btn span {display:inline-block; _display:inline; _zoom:1; width:10px; height:10px; line-height:24px; text-align:center; _font-size:0; margin-left:5px; cursor:pointer; background:#fff;border-radius: 5px}
.focus .btn span.on {background:#4CC0E7;}
.focus .preNext {width:45px; height:100px; position:absolute; top:90px; background:url(img/sprite.html) no-repeat 0 0; cursor:pointer;}
.focus .pre {left:0;}
.focus .next {right:0; background-position:right top;}