请教用JAVASCRIPT编出动态树，，就是网页中或.PDF文件中的目录似的东西

来源：百度知道 编辑：UC知道 时间：2024/05/21 00:12:52
我要在下周之前学会这个，，面试好像要用，，谢谢大家了
我从没学过JS，，只会c

<script language="JavaScript">
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;
}
}