//JAVASCRIPT树型菜单源码----------------------
<script language=JavaScript1.2>
scores = new Array(20);
var numTotal=0;
NS4 = (document.layers) ? 1 : 0;
IE4 = (document.all) ? 1 : 0;
ver4 = (NS4 || IE4) ? 1 : 0;
if (ver4) {
with (document) {
write("<STYLE TYPE='text/css'>");
if (NS4) {
write(".parent {position:absolute; visibility:visible}");
write(".child {position:absolute; visibility:visible}");
write(".regular {position:absolute; visibility:visible}")
}
else {
write(".child {display:none}")
}
write("</STYLE>");
}
}
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 (!ver4) return;
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 {
divColl = document.all.tags("DIV");
for (i=0; i<divColl.length; i++) {
whichEl = divColl(i);
if (whichEl.className == "child") whichEl.style.display = "none";
}
}
}
function expandIt(el) {
if (!ver4) return;
if (IE4) {
whichEl1 = eval(el + "Child");
for(i=1;i<=numTotal;i++){
whichEl = eval(scores[i] + "Child");
if(whichEl!=whichEl1) {
whichEl.style.display = "none";
}
}
whichEl1 = eval(el + "Child");
if (whichEl1.style.display == "none") {
whichEl1.style.display = "block";
}
else {
whichEl1.style.display = "none";
}
}
else {
whichEl = eval("document." + el + "Child");
for(i=1;i<=numTotal;i++){
whichEl = eval("document." + scores[i] + "Child");
if(whichEl!=whichEl1) {
whichEl.visibility = "hide";
}
}
if (whichEl.visibility == "hide") {
whichEl.visibility = "show";
}
else {
whichEl.visibility = "hide";
}
arrange();
}
}
onload = initIt;
</script>
//----------------------------------------调用
<div id=KB1Parent>
<a onClick="expandIt('KB1');return false" href="#"><img src="plus.gif" border=0>精品下载</a>
</div>
<div class=child id=KB1Child>
<a href="#"><img src="blank.gif" border=0>Dreamweaver 资源</a><br>
<a href="#"><img src="blank.gif" border=0>Fireworks 资源</a><br>
<a href="#"><img src="blank.gif" border=0>Flash 资源</a><br>
<a href="#"><img src="blank.gif" border=0>Photoshop 资源</a>
</div>
<div id=KB2Parent>
<a onClick="expandIt('KB2');return false" href="#"><img src="plus.gif" border=0>免费申请</a>
</div>
<div class=child id=KB2Child>
<a href="#"><img src="blank.gif" border=0>免费计数器申请</a><br>
<a href="#"><img src="blank.gif" border=0>免费留言板申请</a><br>
<a href="#"><img src="blank.gif" border=0>免费网上调查申请</a></div>
<div id=KB3Parent>
<a onClick="expandIt('KB3');return false" href="#"><img src="plus.gif" border=0>酷站源码</a>
</div>
<div class=child id=KB3Child>
<a href="#"><img src="blank.gif" border=0>脚本收集</a><br>
<a href="#"><img src="blank.gif" border=0>HTML特效</a><br>
<a href="#"><img src="blank.gif" border=0>ASP源程序下载</a><br>
<a href="#"><img src="blank.gif" border=0>XML方面</a><br>
</div>
<script>numTotal=3;scores[1]='KB1';scores[2]='KB2';scores[3]='KB3';</script>
//------------------------------------------------------------
制作要点：
1、每一个分类都需定义值：
<div id=KB1Parent> // ID值为唯一的
<a onClick="expandIt('KB1'); return false" href="#" >精品下载</a></div> // 定义onclick属性
--------------------------------------------------------------------------------
2、每一个分类下面的文件都需统一定义class及ID。
<div class=child id=KB1Child> // ID值为唯一的
<a href="#" >Dreamweaver 资源</div>
<a href="#" >Dreamweaver 资源</div>
</div>
--------------------------------------------------------------------------------
3、在分类的下边有一 script 的定义：
<script>numTotal=3;scores[1]='KB1';scores[2]='KB2';scores[3]='KB3';</script>
如果要增加一个类，则需把 numTotal 增加数值，再加一个scores[N]='KBN'，例：
<script>numTotal=4;scores[1]='KB1';scores[2]='KB2';scores[3]='KB3';scores[4]='KB4';</script>
