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_open_click() {
	if ($(this).find('ul')) {
		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);
  $('#menu > li').bind('click', jsddm_open_click);
});
//document.onclick = jsddm_close;