function showSubMenu( id )
{
	  var item = document.getElementById('subMenu-'+id);
	  var menuitem = document.getElementById('menuitem-'+id);
		if (item.style) {

			if (item.style.display == "none") { 
				item.style.display = "";
				menuitem.className = "menuitem-selected";
				
				item.style.filter = revealTrans(DURATION=2, TRANSITION=3); 
			}
		}
};

     function hideSubMenu( id )
     {
   	    var menuitem = document.getElementById('menuitem-'+id);
 		menuitem.className = "menuitem";
	    var item = document.getElementById('subMenu-'+id);
		if (item.style) {
			item.style.display = "none"; 
		}
     };