var timeout	= 1000;
		var closetimer	= 0;
		var ddmenuitem	= 0;
		
		function mopen(id)
		{	
			mcancelclosetime();
		
			if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
		
			ddmenuitem = document.getElementById(id);
		
			ddmenuitem.style.visibility = 'visible';
		}
		
		function mclose()
			{ if(ddmenuitem) ddmenuitem.style.visibility = 'hidden'; }
		
		
		function mclosetime()
			{ closetimer = window.setTimeout(mclose, timeout); }
		
		
		function mcancelclosetime()
		{
			if(closetimer)
			{
				window.clearTimeout(closetimer);
				closetimer = null;
			}
		}