我搜集过一段类似的js，不知道有用否

作者： unknow

脚本说明:
第一步:把如下代码加入<head>区域中
<SCRIPT LANGUAGE="JavaScript">

</SCRIPT>

第二步:把如下代码加入<body>区域中
<span class="label"></span><br>


<A HREF="#" onClick="expandAll(false); return false"><IMG NAME="imEx" SRC="bulle
t-plus.gif" WIDTH=9 HEIGHT=9 BORDER=0 ALT="展开或关闭全部菜单"><FONT STYLE="font-
size: 9pt">展开/关闭全部</FONT></A>



<DIV ID="elOneParent" CLASS=parent style="margin-left: 0.1px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=101><tr><td class=label>
<A HREF="#" style="color:#FFFF00; text-decoration:none;"  onClick="expandIt(@#elO
ne@#); return false"><IMG NAME="imEx" SRC="bullet-plus.gif" WIDTH=9 HEIGHT=9 BORDE
R=0 ALT="展开全部菜单"> 主菜单一
</a></td></tr></table>
</DIV>

<DIV ID="elOneChild" CLASS=child style="margin-left: 0.5px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=96>
<tr><td>
        <A HREF="1.htm" target="data">连接页面1</A><BR>
</td></tr><tr><td>
        <A HREF="2.htm" target="data">连接页面2</A><BR>
</td></tr><tr><td>
    <A HREF="3.htm" target="data">连接页面3</A><BR>
</td></tr><tr>
      <td height="12"> <A HREF="4.htm" target="data">连接页面4</A> </td>
    </tr></table>
</DIV>


<DIV ID="elTwoParent" CLASS=parent style="margin-left: 0.1px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=101><tr><td class=label>
<A HREF="#" style="color:#FFFF00; text-decoration:none;"  onClick="expandIt(@#elT
wo@#); return false"><IMG NAME="imEx" SRC="bullet-plus.gif" WIDTH=9 HEIGHT=9 BORDE
R=0 ALT="展开全部菜单"> 主菜单二
</a></td></tr></table>
</DIV>


<DIV ID="elTwoChild" CLASS=child style="margin-left: 0.5px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=96>
<tr><td>
        <A HREF="1.htm" target="data">连接页面1</A><BR>
</td></tr><tr><td>
        <A HREF="2.htm" target="data">连接页面2</A><BR>
</td></tr><tr><td>
    <A HREF="3.htm" target="data">连接页面3</A><BR>
</td></tr><tr><td>
    <A HREF="4.htm" target="data">连接页面4</A>
</td></tr></table>
</DIV>


<DIV ID="elThreeParent" CLASS=parent style="margin-left: 0.1px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=101><tr><td class=label>
<A HREF="#" style="color:#FFFF00; text-decoration:none;"  onClick="expandIt(@#elT
hree@#); return false"><IMG NAME="imEx" SRC="bullet-plus.gif" WIDTH=9 HEIGHT=9 BOR
DER=0 ALT="展开全部菜单"> 主菜单三
</a></td></tr></table>
</DIV>


<DIV ID="elThreeChild" CLASS=child style="margin-left: 0.5px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=96>
<tr><td>
        <A HREF="1.htm" target="data">连接页面1</A><BR>
</td></tr><tr><td>
        <A HREF="2.htm" target="data">连接页面2</A><BR>
</td></tr><tr><td>
    <A HREF="3.htm" target="data">连接页面3</A><BR>
</td></tr><tr><td>
    <A HREF="4.htm" target="data">连接页面4</A>
</td></tr></table>
</DIV>


<DIV ID="elFourParent" CLASS=parent style="margin-left: 0.1px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=101><tr><td class=label>
<A HREF="#" style="color:#FFFF00; text-decoration:none;"  onClick="expandIt(@#elF
our@#); return false"><IMG NAME="imEx" SRC="bullet-plus.gif" WIDTH=9 HEIGHT=9 BORD
ER=0 ALT="展开全部菜单"> 主菜单四
</a></td></tr></table>
</DIV>


<DIV ID="elFourChild" CLASS=child style="margin-left: 0.5px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=96>
<tr><td>
        <A HREF="1.htm" target="data">连接页面1</A><BR>
</td></tr><tr><td>
        <A HREF="2.htm" target="data">连接页面2</A><BR>
</td></tr><tr><td>
    <A HREF="3.htm" target="data">连接页面3</A><BR>
</td></tr><tr><td>
    <A HREF="4.htm" target="data">连接页面4</A>
</td></tr></table>
</DIV>


<DIV ID="elFiveParent" CLASS=parent style="margin-left: 0.1px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=101><tr><td class=label>
<A HREF="#" style="color:#FFFF00; text-decoration:none;"  onClick="expandIt(@#elF
ive@#); return false"><IMG NAME="imEx" SRC="bullet-plus.gif" WIDTH=9 HEIGHT=9 BORD
ER=0 ALT="展开全部菜单"> 主菜单五
</a></td></tr></table>
</DIV>


<DIV ID="elFiveChild" CLASS=child style="margin-left: 0.5px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=96>
<tr><td>
        <A HREF="1.htm" target="data">连接页面1</A><BR>
</td></tr><tr><td>
        <A HREF="2.htm" target="data">连接页面2</A><BR>
</td></tr><tr><td>
    <A HREF="3.htm" target="data">连接页面3</A><BR>
</td></tr><tr><td>
    <A HREF="4.htm" target="data">连接页面4</A>
</td></tr></table>
</DIV>


<DIV ID="elSixParent" CLASS=parent style="margin-left: 0.1px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=101><tr><td class=label>
<A HREF="#" style="color:#FFFF00; text-decoration:none;"  onClick="expandIt(@#elS
ix@#); return false"><IMG NAME="imEx" SRC="bullet-plus.gif" WIDTH=9 HEIGHT=9 BORDE
R=0 ALT="展开全部菜单"> 主菜单六
</a></td></tr></table>
</DIV>


<DIV ID="elSixChild" CLASS=child style="margin-left: 0.5px">
<TABLE BORDER=1 CELLSPACING=0 CELLPADDING=0 WIDTH=96>
<tr><td>
        <A HREF="1.htm" target="data">连接页面1</A><BR>
</td></tr><tr><td>
        <A HREF="2.htm" target="data">连接页面2</A><BR>
</td></tr><tr><td>
    <A HREF="3.htm" target="data">连接页面3</A><BR>
</td></tr><tr><td>
    <A HREF="4.htm" target="data">连接页面4</A>
</td></tr></table>
</DIV>



<DIV ID="elExpParent" CLASS=regular> <A HREF="#" onClick="expandAll(true); retur
n false"><IMG NAME="imEx" SRC="bullet-plus.gif" WIDTH=9 HEIGHT=9 BORDER=0 ALT="展
开/关闭全部">展开/关闭全部</A> </DIV>



<br>

<SCRIPT LANGUAGE="JavaScript1.2">

</SCRIPT>

rsment.js
isExpanded = false;

function getIndex(el) {
   ind = null;
   for (i=0; i<document.layers.length; i++) {
    whichEl = document.layers[i];
    if (whichEl.id == el) {
       ind = i;
       break;
    }
   }
   return ind;
}

function arrange() {
   nextY = document.layers[firstInd].pageY + document.layers[firstInd].document.
height;
   for (i=firstInd+1; i<document.layers.length; i++) {
    whichEl = document.layers[i];
       if (whichEl.visibility != "hide") {
        whichEl.pageY = nextY;
        nextY += whichEl.document.height;
       }
   }
}

function initIt(){
   if (NS4) {
    for (i=0; i<document.layers.length; i++) {
       whichEl = document.layers[i];
        if (whichEl.id.indexOf("Child") != -1) whichEl.visibility = "hide";
    }
    arrange();
   }
   else {
    tempColl = document.all.tags("DIV");
    for (i=0; i<tempColl.length; i++) {
       if (tempColl(i).className == "child") tempColl(i).style.display = "none";
    }
   }
}

function expandIt(el) {
   if (!ver4) return;
   if (IE4) {expandIE(el)} else {expandNS(el)}
}

function expandIE(el) {
   whichEl = eval(el + "Child");
   whichIm = event.srcElement;

   if (whichEl.style.display == "none") {
    whichEl.style.display = "block";
    whichIm.src = "bullet-minus.gif";
   }
   else {
    whichEl.style.display = "none";
    whichIm.src = "bullet-plus.gif";
   }
}

function expandNS(el) {
   whichEl = eval("document." + el + "Child");
   whichIm = eval("document." + el + "Parent.document.images[@#imEx@#]");
   if (whichEl.visibility == "hide") {
    whichEl.visibility = "show";
    whichIm.src = "bullet-minus.gif";
   }
   else {
    whichEl.visibility = "hide";
    whichIm.src = "bullet-plus.gif";
   }
   arrange();
}

function showAll() {
   for (i=firstInd; i<document.layers.length; i++) {
    whichEl = document.layers[i];
    whichEl.visibility = "show";
   }
}

function expandAll(isBot) {
   newSrc = (isExpanded) ? "bullet-plus.gif" : "bullet-minus.gif";

   if (NS4) {
        document.images["imEx"].src = newSrc;
    for (i=firstInd; i<document.layers.length; i++) {
        whichEl = document.layers[i];
        if (whichEl.id.indexOf("Parent") != -1) {
           whichEl.document.images["imEx"].src = newSrc;
        }
        if (whichEl.id.indexOf("Child") != -1) {
           whichEl.visibility = (isExpanded) ? "hide" : "show";
        }
    }

    arrange();
    if (isBot && isExpanded) scrollTo(0,document.layers[firstInd].pageY);
   }
   else {
    divColl = document.all.tags("DIV");
    for (i=0; i<divColl.length; i++) {
        if (divColl(i).className == "child") {
           divColl(i).style.display = (isExpanded) ? "none" : "block";
        }
    }
    imColl = document.images.item("imEx");
    for (i=0; i<imColl.length; i++) {
        imColl(i).src = newSrc;
    }
   }

   isExpanded = !isExpanded;
}

with (document) {
   write("<STYLE TYPE=@#text/css@#>");
   if (NS4) {
    write(".parent {position:absolute; visibility:hidden}");
    write(".child {position:absolute; visibility:hidden}");
    write(".regular {position:absolute; visibility:hidden}")
   }
   else {
    write(".child {display:none}")
   }
   write("</STYLE>");
}

onload = initIt;

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