function treeInit()
{
   if(!document.getElementsByTagName){return;}
   var objs=document.getElementsByTagName("div");
   for(var i=0;i<objs.length;i++)
   {
      if(objs[i].className=="titem")
      {
      objs[i].style.display="none";
      }
   }
}
function treeFunc(id)
{
  if(!document.getElementsByTagName){return false;}
   var obj=document.getElementById(id);
   if(obj.style.display=="block")
   {
      obj.style.display="none";
   }else{
      obj.style.display="block";
   }
   return false;
}