常用于后台的JS多级树形目录

代码简介：

常用于后台的JS多级树形目录，代码虽然老，但很实用。

代码内容：

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>常用于后台的JS多级树形目录_网页代码站(www.webdm.cn)</TITLE>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<style>
td{text-align:left;font-size:9pt}
a{text-decoration:none}
</style>
</HEAD>
<SCRIPT LANGUAGE="JavaScript">
function ShowSub(theId) 
{
    theFo = eval("fold_" + theId);
    if (theFo.style.display == "none") 
    {
        theFo.style.display = "block";
    }
    else
    {
        theFo.style.display = "none";
    }/*
    for (i = 0; i < 7; i++) 
    {
    if (i == theId)
    continue;
    theFo = eval("tr_" + i);
    theFo.style.display = "none";
    }*/
}
//-->
</SCRIPT>
<BODY>
<table>
<!--主目录1-->
<tr>
<td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
<a href="javascript:ShowSub('0')">软件下载</a></td>
</tr>
    <!--主目录1下->1级子目录1-->
<tr id='fold_0' style="display:none">
    <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
    <td>
    <table>
        <!--2级子目录0_01-->
    <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('0_01')">常用工具</td>
    </tr>
    <tr id='fold_0_01' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
        <table>
            <!--3级子目录0_01_01-->
        <tr>
            <td colspan=2><img  src="foldericon.gif" WIDTH="16" HEIGHT="16">
            <a href="javascript:ShowSub('0_01_01')">输入法</td>
        </tr>
        <tr id='fold_0_01_01' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
            智能ABC<br>
            万能五笔<br>
            智能五笔<br>
        </td>
        </tr>
            <!--3级子目录0_01_02-->
        <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('0_01_02')">杀毒软件</td>
        </tr>
        <tr id='fold_0_01_02' style="display:none">
        <td width='13px' background='line1.gif'></td><!--缩进-->
        <td>
            软件补丁<br>
            病毒库<br>
            病毒信息<br>
        </td>
        </tr>
            <!--3级子目录0_01_03-->
        <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('0_01_03')">压缩解压</td>
        </tr>
        <tr id='fold_0_01_03' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
            winZip<br>
            winRar<br>
        </td>
        </tr>
        </table>
        </td>
    </tr>
        <!--2级子目录0_02-->
    <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('0_02')">系统工具</td>
    </tr>
    <tr id='fold_0_02' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
        <table>
            <!--3级子目录0_02_01-->
        <tr>
            <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
            <a href="javascript:ShowSub('0_02_01')">系统维护</td>
        </tr>
        <tr id='fold_0_02_01' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
            磁盘修复<br>
            磁盘清理<br>
            系统修复<br>
        </td>
        </tr>
            <!--3级子目录0_02_02-->
        <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('0_02_02')">系统测试</td>
        </tr>
        <tr id='fold_0_02_02' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
            硬件检测<br>
            性能测试<br>
        </td>
        </tr>
            <!--3级子目录0_02_03-->
        <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('0_02_03')">系统补丁</td>
        </tr>
        <tr id='fold_0_02_03' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
            windows2000补丁<br>
            windows2003补丁<br>
            windowsXp补丁
        </td>
        </tr>
        </table>
        </td>
    </tr>
 
    </table>
    </td>
</tr>
<!--主目录2-->
<tr>
<td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
<a href="javascript:ShowSub('1')">硬件资讯</a></td>
</tr>
    <!--主目录1下->1级子目录1-->
<tr id='fold_1' style="display:none">
    <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
    <td>
    <table>
        <!--2级子目录1_01-->
    <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('1_01')">产业资讯</td>
    </tr>
    <tr id='fold_1_01' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
            国内业界<br>
            国际业界<br>
            热门专题<br>
        </td>
    </tr>
        <!--2级子目录1_02-->
    <tr>
        <td colspan=2><img  src="http://www.webdm.cn/images/20100106/foldericon.gif" WIDTH="16" HEIGHT="16">
        <a href="javascript:ShowSub('1_02')">今日报价</td>
    </tr>
    <tr id='fold_1_02' style="display:none">
        <td width='13px' background='http://www.webdm.cn/images/20100106/line1.gif'></td><!--缩进-->
        <td>
            笔记本<br>台式机<br>MP3
        </td>     
    </tr>
    </table>
    </td>
</tr>
</table>
</BODY>
</HTML>
<br>
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