javascript 无限级树形菜单

 1var list=new Array();
2            list=[["","a0","aa1","target='blank' href='http://baidu.com/s?wd='"],["","a1","aa2","target='blank' href='http://baidu.com'"],["","a2","aa3","target='blank' href='http://baidu.com'"],["a0","2","bb","target='blank' href='http://baidu.com'"],["2","b2","bba","target='blank' href='http://baidu.com'"],["b2","b22","bbaaa","target='blank' href='http://baidu.com'"],["b2","b221","bbaaa","target='blank' href='http://baidu.com'"],["b2","b222","bbaaa","target='blank' href='http://baidu.com'"],["b2","b223","bbaaa","target='blank' href='http://baidu.com'"]];
3        function CreateObjectNode(nodeName,id,className,text)
4        {
5            var obj=document.createElement(nodeName);
6            obj.id=id;
7            obj.className=className;
8            obj.innerHTML=text;
9            return obj;
10        }
11
12        function CreateItem(oMenuList,NodeName,BoxID)
13        {
14            var list=new Array();
15            list=oMenuList;
16            var parentNode=document.getElementById(BoxID);
17
18            var len=parseInt(list.length);
19            for(i=0;i<len;i++)
20            {
21
22                if(list[i][0]==NodeName){
23                var topBoxID=list[i][1]+i+"Top";
24                var itemBoxID=list[i][1]+i+"Item";
25                var titleBoxID=list[i][1]+i+"Title";
26
27                    //create top-box
28                    if(!document.getElementById(titleBoxID))
29                    {
30                    var item=CreateObjectNode("div",topBoxID,"","");}
31
32                    //create title-box
33                    if(!document.getElementById(titleBoxID))
34                    {var itemObj=CreateObjectNode("div",titleBoxID,"","-<a "+list[i][3]+" onclick=\"CreateSingleMenu('"+list[i][1]+"','"+itemBoxID+"');\">"+list[i][2]+"</a>");
35                    item.appendChild(itemObj);}
36                    //create item-box
37                    if(!document.getElementById(itemBoxID))
38                    { var itemObjItem=CreateObjectNode("div",itemBoxID,"","");
39                    //itemObj.onclick="CreateSingleMenu('"+list[i][1]+"','"+itemBoxID+"')";
40
41
42                     item.appendChild(itemObjItem);}
43
44                    parentNode.appendChild(item);
45                }
46            }
47        }
48        function CreateSingleMenu(NodeName,BoxID)
49        {
50        var child=document.getElementById(BoxID).childNodes;
51        for(i=0;i<child.length;i++)
52            {child[i].innerHTML="";document.getElementById(BoxID).removeChild(child[i])}
53        if(NodeName=="")
54        {document.getElementById(BoxID).innerHTML="<a onclick=\"CreateSingleMenu('','box');\">clean</a>";}
55            CreateItem(list,NodeName,BoxID)
56        }
57        CreateSingleMenu("","box");