// JavaScript Document

function addClass(obj,className){
  if(!obj)
    return false;
  obj.className = obj.className + " " + className;
}
 
function removeClass(obj,className){
  if (!obj || !obj.className)
    return false;
  obj.className = obj.className.replace(new RegExp("\\b" + className + "\\b","g"), "").replace(/^\s*|\s$/g,"")
}

function startlist(){
  var navRoot = document.getElementById("menu");
  for(var i = 0; i < navRoot.childNodes.length; i++)
  {
    node = navRoot.childNodes[i];
    if(node.nodeName == "LI")
    {
      node.onmouseover = function(){
        //this.className = "hover";
        addClass(this, "hover");
      };
      node.onmouseout = function(){
        //this.className = "explain";
        removeClass(this, "hover");
      };
    }
  }
}

window.onload = startlist;