.clear { clear: both; }
#gallery {
    font: 11px verdana, arial, sans-serif;/*设置字体大小及字体类型*/
    width: 750px;
    padding: 15px 0 0 0;
    line-height: 15px;/*设置行高*/
}
#gallery .on {/*当前选项卡的样式表*/
    color: #c00;
    padding: 0 20px;
    margin-right: 2px;
    margin-top: 1px;
    float: left;
    background: url(tabs_2.gif) repeat-x left bottom;/*当前选项卡的背景图*/
    border: 1px solid #000;/*设置边框*/
    border-bottom: 0;/*不显示底部边框*/
    cursor: pointer;/*手势*/
    height: 33px;
    line-height: 32px;
    position: relative;
    z-index: 100;/*叠放次序*/
}
#gallery .off {/*非当前选项卡的样式表*/
    color: #000;
    height: 33px;
    margin-right: 2px;
    line-height: 33px;
    padding: 0 20px;
    float: left;
    background: url(tabs_0.gif) repeat-x left bottom;/*非当前选项卡的背景图*/
    border: 1px solid #ddd;
    border-bottom-color: #000;
    cursor: pointer;
    position: relative;
    z-index: 20;
}
.show {/*显示详情的样式表*/
    clear: left;
    background: #fff;
    width: 708px;
    margin-top: 0;
    top: -1px;
    border: 1px solid #000;
    padding: 20px;
    position: relative;
    z-index: 50;
    font: 11px verdana, arial, sans-serif;
    line-height: 18px;
}
.show img {/*图文混排中图片的样式*/
    float: left;
    margin: 0 10px 10px 0;
}
.hide {/*不显示详情的样式表*/
    display: none;
    width: 0;
    overflow: hidden;
}