var timeout = 500;
		var closetimer = 0;
		var ddmenuitem = 0;

		function jsddm_open() {
			jsddm_canceltimer();
			jsddm_close();
			ddmenuitem = $(this).find('ul').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;
			}
		}

		$(document).ready(function(){
			$('#menu > li').bind('mouseover', jsddm_open)
			$('#menu > li').bind('mouseout',  jsddm_timer)
		});

		document.onclick = jsddm_close;