var sub_menu = 0;
				var sub_menu_timer;

				function change_sub_menu (id, offsetLeft, offsetTop)
				{
					if  (navigator.appName == "Microsoft Internet Explorer")
					{
						var arVersion = navigator.appVersion.split("MSIE");
						var version = parseFloat(arVersion[1]);
						if (version < 7)
							offsetTop = offsetTop - 2;
					}
				  clearTimeout (sub_menu_timer);
			  	if (sub_menu)
				  {
				    document.getElementById('sub_menu' + sub_menu).style.display = "none";
				  }
				  if (id)
				  {
					  document.getElementById('sub_menu' + id).style.display = "";
					  document.getElementById('sub_menu' + id).style.left = offsetLeft - 1 + "px";
					  document.getElementById('sub_menu' + id).style.bottom = offsetTop - 45 + "px";
					}
					sub_menu = id;
				}
				
				function default_sub_menu (id)
				{
				  sub_menu_timer = setTimeout("change_sub_menu (" + id + ", 0 ,0);", 1000);
				}