.focus {width:1000px; height:250px; overflow:hidden; position:relative;}
.focus ul {height:250px; position:absolute;}
.focus ul li {float:left; width:1000px; height:250px; overflow:hidden; position:relative; background:#000;}
.focus ul li img{ width:1000px; height:250px;}
.focus ul li div {position:absolute; overflow:hidden;}
.focus .btnBg {position:absolute; width:1000px; height:20px; left:0; bottom:0; background:#000; display:none;}
.focus .btn {position:absolute; text-align:right; width:982px; height:23px; padding:0px 10px 0px 10px; right:0; bottom:16px; }
.focus .btn span.on {background:#fff;}
.focus .preNext {width:45px; height:100px; display:none; position:absolute; top:90px; background:url(img/sprite.png) no-repeat 0 0; cursor:pointer;}
.focus .pre {left:0;}
.focus .next {right:0; background-position:right top;}

.focus .btn span
{display:inline-block; _display:inline; _zoom:1; width:25px; height:24px; line-height:24px; text-align:center; _font-size:0; margin-left:5px; cursor:pointer; background:#fff;}