var timeout    = 500;
var closetimer = 0;
var ddmenuitem = 0;
 
function cms_menu_open()
{  cms_menu_canceltimer();
   cms_menu_close();
   ddmenuitem = $(this).find('ul').css('visibility', 'visible');}
 
function cms_menu_close()
{  if(ddmenuitem) ddmenuitem.css('visibility', 'hidden');}
 
function cms_menu_timer()
{  closetimer = window.setTimeout(cms_menu_close, timeout);}
 
function cms_menu_canceltimer()
{  if(closetimer)
   {  window.clearTimeout(closetimer);
      closetimer = null;}}
 
$(document).ready(function()
{  $('#cms_menu > li').bind('mouseover', cms_menu_open)
   $('#cms_menu > li').bind('mouseout',  cms_menu_timer)});
 
document.onclick = cms_menu_close;