function obj(name)
{
   this.obj = document.getElementById(name);
   this.style = this.obj.style;
}

function expMenu(name)
{
   var x = new obj(name);
   var tmp = x.style.display;
   closeAll();
   x.style.display = (tmp != "block") ? "block" : "none";
   x.style.paddingBottom = "0";
}

function closeAll()
{
   var links = new obj("links");
   var allSubMenus = links.obj.getElementsByTagName("div");
   for(var i=0; i<allSubMenus.length; i++)
   {
      if (allSubMenus[i].id != "")
      {
         allSubMenus[i].style.display="none";
      }
   }
}