function jsddm_open()
			{	jsddm_canceltimer();
				jsddm_close();
				ddmenuitem = $(this).find('ul').eq(0).css('visibility', 'visible');}
			
			function jsddm_close()
			{	if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');}
			
			function jsddm_timer()
			{	closetimer = window.setTimeout(jsddm_close, timeout);}
			
			function jsddm_canceltimer()
			{	if(closetimer)
				{	window.clearTimeout(closetimer);
					closetimer = null;}}