#focus {
    height: 273px;
    overflow: hidden;
    position: relative;
}

#focus ul {
        height: 273px;
        position: absolute;
    }

#focus ul li {
            float: right;
            height: 273px;
            overflow: hidden;
            position: relative;
            background: #000;
        }

#focus ul li div {
                position: absolute;
                overflow: hidden;
            }

#focus .btnBg {
        position: absolute;
        height: 5px;
        left: 0;
        bottom: 0;
    }

#focus .btn {
        position: absolute;
        height: 5px;
        padding: 5px 10px;
        right: 0;
        bottom:40px;
        text-align: right;
    }

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

#focus .btn span.on {
                background: #fff;
            }

#focus .preNext {
        width: 45px;
        height: 100px;
        position: absolute;
        top: 120px;
        background: url(http://keleyi.com/keleyi/phtml/jqtexiao/10/images/sprite.png) no-repeat 0 0;
        cursor: pointer;
    }

#focus .pre {
        left: 0;
    }

#focus .next {
        right: 0;
        background-position: right top;
    }