$(document).ready(function() {

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

  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;}}

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

  document.onclick = jsddm_close;
  
});