<table>
        <thead>
            <tr>
                <th>姓名</th>
                <th>性别</th>
                <th>暂住地</th>
            </tr>
        </thead>
        <tbody>
            <tr class="parent" id="row_01">
                <td colspan="3">前台设计组</td>
            </tr>
            <tr class="child_row_01">
                <td>张山</td>
                <td>男</td>
                <td>浙江宁波</td>
            </tr>
            <tr class="child_row_01">
                <td>李四</td>
                <td>女</td>
                <td>浙江杭州</td>
            </tr>
            <tr class="parent" id="row_02">
                <td colspan="3">前台开发组</td>
            </tr>
            <tr class="child_row_02">
                <td>王五</td>
                <td>男</td>
                <td>湖南长沙</td>
            </tr>
            <tr class="child_row_02">
                <td>找六</td>
                <td>男</td>
                <td>浙江温州</td>
            </tr>
            <tr class="parent" id="row_03">
                <td colspan="3">后台开发组</td>
            </tr>
            <tr class="child_row_03">
                <td>Rain</td>
                <td>男</td>
                <td>浙江杭州</td>
            </tr>
            <tr class="child_row_03">
                <td>MAXMAN</td>
                <td>女</td>
                <td>浙江杭州</td>
            </tr>
        </tbody>
    </table>
    <script>
        $(function () {
            $(‘tr.parent‘).click(function () {
                //$(this).toggleClass("selected")//添加/删除高亮
                //.siblings(‘.child_‘ + this.id).toggle();
                $(this).siblings(‘.child_‘ + this.id).toggle();
            })
        })
    </script>
 <style>
        table {
            border: 0;
            border-collapse: collapse;
        }
        td {
            font: normal 12px/17px Arial;
            padding: 2px;
            width: 100px;
        }
        th {
            font: bold 12px/17px Arial;
            text-align: left;
            padding: 4px;
            border-bottom: 1px solid #333;
            width: 100px;
        }
        .parent {
            background: #FFF38F;
            cursor: pointer;
        }
        /* 偶数行样式*/
        .odd {
            background: #FFFFEE;
        }
        /* 奇数行样式*/
        .selected {
            background: #FF6500;
            color: #fff;
        }
    </style>
原文:http://www.cnblogs.com/yangpeng-jingjing/p/6003403.html