对javascript完全不了解，网上找的做动态下拉菜单的代码，结果提示错误：
网页错误详细信息

用户代理: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
时间戳: Sun, 15 Sep 2013 03:53:31 UTC


消息: 缺少 ';'
行: 2
字符: 6
代码: 0
URI: file:///E:/做网站资料/updateindex/js/h_nav_menu.js

附上源代码：
// JavaScript Document
1    window.onload = initMenu;
2
3    function initMenu() {
4         assembleMenu(document.getElementById("menu"));
5    }
6
7    function assembleMenu(uLParentNode) {
8         var theUL = uLParentNode.getElementsByTagName("ul")[0];
9         var theULChilds = theUL.childNodes;
10
11         for (var i=0; i<theULChilds.length; i++) {
12            if (theULChilds[i].tagName == "LI") {
13                 var theLINode = theULChilds[i];
14                if (hasNextLevelMenu(theLINode)) {
15                    setMouseActions(theLINode);
16                    theLINode.firstChild.className = uLParentNode.tagName == "DIV" ? "downMenu" : rightMenu";
17
18                    assembleMenu(theLINode);
19                }
20             }
21         }
22
23        function hasNextLevelMenu(node) {
24            return node.getElementsByTagName("ul").length > 0;
25        }
26
27        function setMouseActions(node) {
28            node.onmouseover = function() {
29                this.getElementsByTagName("ul")[0].style.display = "block";
30            };
31
32            node.onmouseout = function() {
33                this.getElementsByTagName("ul")[0].style.display = "none";
34            };
35        }
36    }
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