function addEvent(o,e,f){
  if(o.addEventListener){ o.addEventListener(e,f,false); return true; }
  else if (o.attachEvent){ return o.attachEvent("on"+e,f); }
  else { return false; }
}


function setDefault(name,val) {
  if (typeof(window[name])=="undefined" || window[name]==null) {
    window[name]=val;
  }
}


function expandTree(treeId) {
  var ul = document.getElementById(treeId);
  if (ul == null) { return false; }
  expandCollapseList(ul,nodeOpenClass);
}


function collapseTree(treeId) {
  var ul = document.getElementById(treeId);
  if (ul == null) { return false; }
  expandCollapseList(ul,nodeClosedClass);
}


function expandToItem(treeId,itemId) {
  var ul = document.getElementById(treeId);
  if (ul == null) { return false; }
  var ret = expandCollapseList(ul,nodeOpenClass,itemId);
  if (ret) {
    var o = document.getElementById(itemId);
    if (o.scrollIntoView) {
      o.scrollIntoView(false);
    }
  }
}


function expandCollapseList(ul,cName,itemId) {
  if (!ul.childNodes || ul.childNodes.length==0) { return false; }

  for (var itemi=0;itemi<ul.childNodes.length;itemi++) {
    var item = ul.childNodes[itemi];
    if (itemId!=null && item.id==itemId) { return true; }
    if (item.nodeName == "LI") {

      var subLists = false;
      for (var sitemi=0;sitemi<item.childNodes.length;sitemi++) {
        var sitem = item.childNodes[sitemi];
        if (sitem.nodeName=="UL") {
          subLists = true;
          var ret = expandCollapseList(sitem,cName,itemId);
          if (itemId!=null && ret) {
            item.className=cName;
            return true;
          }
        }
      }
      if (subLists && itemId==null) {
        item.className = cName;
      }
    }
  }
}


function convertTrees() {
  setDefault("treeClass","mktree");
  setDefault("nodeClosedClass","COLLAPSE");
  setDefault("nodeOpenClass","EXPAND");
  setDefault("nodeBulletClass","liBullet");
  setDefault("nodeLinkClass","bullet");
  setDefault("preProcessTrees",true);
  if (preProcessTrees) {
    if (!document.createElement) { return; } 
    var uls = document.getElementsByTagName("ul");
    if (uls==null) { return; }
    var uls_length = uls.length;
    for (var uli=0;uli<uls_length;uli++) {
      var ul=uls[uli];
      if (ul.nodeName=="UL" && ul.className==treeClass) {
        processList(ul);
      }
    }
  }
}

function treeNodeOnclick() {
  this.parentNode.className = (this.parentNode.className==nodeOpenClass) ? nodeClosedClass : nodeOpenClass;
  return false;
}
function retFalse() {
  return false;
}

function processList(ul) {
  if (!ul.childNodes || ul.childNodes.length==0) { return; }

  var childNodesLength = ul.childNodes.length;
  for (var itemi=0;itemi<childNodesLength;itemi++) {
    var item = ul.childNodes[itemi];
    if (item.nodeName == "LI") {
     
      var subLists = false;
      var itemChildNodesLength = item.childNodes.length;
      for (var sitemi=0;sitemi<itemChildNodesLength;sitemi++) {
        var sitem = item.childNodes[sitemi];
        if (sitem.nodeName=="UL") {
          subLists = true;
          processList(sitem);
        }
      }
      var s= document.createElement("SPAN");
      var t= '\u00A0'; 
      s.className = nodeLinkClass;
      if (subLists) {
   
        if (item.className==null || item.className=="") {
          item.className = nodeClosedClass;
        }
      
        if (item.firstChild.nodeName=="#text") {
          t = t+item.firstChild.nodeValue;
          item.removeChild(item.firstChild);
        }
        s.onclick = treeNodeOnclick;
      }
      else {

        item.className = nodeBulletClass;
        s.onclick = retFalse;
      }
      s.appendChild(document.createTextNode(t));
      item.insertBefore(s,item.firstChild);
    }
  }
  }