this.sitemapstyler = function(){
 var sitemap = document.getElementById("sitemap")
 if(sitemap){
  this.listItem = function(li){
   if(li.getElementsByTagName("ul").length > 0){
    var ul = li.getElementsByTagName("ul")[0];
    ul.style.display = "block";
    var span = document.createElement("span");
    span.className = "expanded";
    span.onclick = function(){
     ul.style.display = (ul.style.display == "none") ? "block" : "none";
     this.className = (ul.style.display == "none") ? "collapsed" : "expanded";
    };
    li.appendChild(span);
   };
  };
  var items = sitemap.getElementsByTagName("li");
  for(var i=0;i<items.length;i++){
   listItem(items[i]);
  };
 };	
};
window.onload = sitemapstyler;