WebRoot/js/treemenu.js

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var openImg = new Image(); 
var closedImg = new Image();
var BASE_PATH = ""; 

function showBranch(branch){ 
   var objBranch = document.getElementById(branch).style;
   if (objBranch.display=="block")
      objBranch.display="none";
   else
      objBranch.display="block";
   swapFolder('I' + branch);
}

function swapFolder(img){
   objImg = document.getElementById(img);
   if (objImg.src.indexOf('closed.gif')>-1)
      objImg.src = openImg.src;
   else
      objImg.src = closedImg.src;
}
function tree(){
   this.branches = new Array();
   this.add = addBranch;
   this.write = writeTree;
   
   this.GetBranchSize = GetBranchSize; 
}

function GetBranchSize() { 
       return this.branches.length; 
}

function addBranch(branch){
   this.branches[this.branches.length] = branch;
}

function writeTree(){
   var treeString = '';
   var numBranches = this.branches.length;
   for (var i=0;i <numBranches;i++)
      treeString += this.branches[i].write();
   document.write(treeString);
}
function branch(id, text){
   this.id = id;
   this.text = text;
   this.write = writeBranch;
   this.add = addLeaf;
   this.leaves = new Array();
}
function addLeaf(leaf){
   this.leaves[this.leaves.length] = leaf;
}

function writeBranch(){
 var branchString = '<span  class="branch"' + 'onClick="showBranch(\'' + this.id + '\')"';
branchString += '><img width=15 height=15 src="' + BASE_PATH +'images/closed.gif" id="I' + this.id + '" />&nbsp;&nbsp;' + this.text;

branchString += '</span>';
branchString += '<span class="leaf" id="';