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

			function jsddm_open() {
			   jsddm_canceltimer();
			   jsddm_close();
			   ddmenuitem = $(this).find('.submenu').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() {
				$('#jsddm > li').bind('mouseover', jsddm_open);
			    $('#jsddm > li').bind('mouseout',  jsddm_timer);
			});

			document.onclick = jsddm_close;