<tr>
    <td class="mouse menu_second_img" id="td2" onclick="show(2)" style="font-size: 14px">
        合同管理
    </td>
</tr>
<tr>
    <td id="show2" style="display: none;">
        <table width="100%" border="0" cellspacing="0" cellpadding="0">
            <tr>
                <td class="left">
                    <table width="100%" height="24" border="0" cellpadding="0" cellspacing="0">
                        <tr>
                            <td width="40" align="center">
                                <img src="../../images/5.png" width="16" height="16">
                            </td>
                            <td>
                                添加合同[color=#FF0000](如何才能点击添加合同之后就链接到另外的'合同页面'呢?)[/color]
                            </td>
                        </tr>
                    </table>
                </td>
            </tr>
        </table>
    </td>
</tr>

cont页,由IFleft和IFright页组成
<tr>
    <td width="180" id="frmTitle" align="center" valign="top">
        <iframe name="left" height="680" width="180" src="IFleft" frameborder="0" scrolling="no">
            浏览器不支持嵌入式框架，或被配置为不显示嵌入式框架。</iframe>
    </td>
    <td width="8" valign="middle" onclick="switchSysBar()">
        <img src="../../images/cont_19.gif" width="8" alt="" height="64" name="img1" id="img1"
            title="打开/关闭左侧栏" style="cursor: hand;" />
    </td>
    <td align="center" valign="top" style="padding-right: 8px;">
        <table style="width: 100%; height: 100%; table-layout: fixed;" border="0" cellpadding="0"
            cellspacing="0">
            <tr>
                <td height="13" style="line-height: 13px;">
                    <table width="100%" border="0" cellspacing="0" cellpadding="0" style="table-layout: fixed;">
                        <tr>
                            <td class="cont_tab_l">
                                &nbsp;
                            </td>
                            <td class="cont_tab_m">
                                &nbsp;
                            </td>
                            <td class="cont_tab_r">
                                &nbsp;
                            </td>
                        </tr>
                    </table>
                </td>
            </tr>
            <tr>
                <td>
                    <table width="100%" height="100%" border="0" cellpadding="0" cellspacing="0" style="table-layout: fixed;">
                        <tr>
                            <td>
                                <iframe name="I1" height="680" width="100%" src="IFright" border="0" frameborder="0"
                                    scrolling="auto">浏览器不支持嵌入式框架，或被配置为不显示嵌入式框架。</iframe>
                            </td>