树形导航问题
调试了好几次 就是不行 大家 看下 那里出错了 困了 实在是看不出来了 谢谢···
程序代码：
<style type="text/css">
<!--
a{text-decoration:none}
#productsmenu , #supportmenu, #contactmenu{
display:none;
}
-->
</style> <ul>
<li><a id="products" href="#">[+] Products</a>
<ul ID="productsmenu">
<li><a href="prodlist.html">Product List</a></li>
<li><a href="order.html">Order Form</a></li>
<li><a href="pricelist.html">Price List</a></li>
</ul>
</li>
<li><a id="support" href="#">[+] Support</a>
<ul id="supportmenu">
<li><a href="sforum.html">Support Forum</a></li>
<li><a href="scontact.html">Contact Support</a></li>
</ul>
</li>
<li><a ID="contact" href="#">[+] Contact Us</a>
<ul id="contactmenu">
<li><a href="contact1.html">Service Department</a></li>
<li><a href="contact2.html">Sales Department</a></li>
</ul>
</li>
</ul>
<script language="javascript">
function Toggle(e) {
if(!document.getElementById) return;
if(!e) var e = window.event;
whichlink = (e.target) ? e.target.id : e.srcElement.id;
obj=document.getElmentById(whichlink + "menu");
visible=(obj.style.display=="block")
key=document.getElementById(whichlink);
keyname=key.firstChild.nodeValue.substring(3);
if (visible){
obj.style.display="none";
key.firstChild.nodeValue = "[+]" + keyname;
}else{
obj.style.display="block";
key.firstChild.nodeValue = "[-]" + keyname;
}
}
document.getElementById("products").onclick=Toggle;
document.getElementById("support").onclick=Toggle;
document.getElementById("contact").onclick=Toggle;
</script>
