function obj(name)
{
   return document.getElementById(name);
}
function menuExp(menu_name, collapse_override)
{
   menu_name = (menu_name.id) ? menu_name : obj(menu_name);
   var menu = menu_name.id + "_menu";
   var menu_obj = obj(menu);

   var tmp = menu_obj.style.display;

   if (collapse_override != 1)
   {
      var div_left_links = document.getElementById("left_links");
      var all_left_links = div_left_links.getElementsByTagName("div");

      for (i=0; i < all_left_links.length; i++)
      {
         if (all_left_links[i].id != "")
         {
            all_left_links[i].style.display = "none";
         }
      }
   }

   menu_obj.style.display = (tmp != "block") ? "block" : "none";
}