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

function jsddm_open()
{
	jsddm_canceltimer();
	jsddm_close();
	ddmenuitem = $(this).find('ul').css('visibility', 'visible');
	var parent = ddmenuitem.parent();
	
	if (parent.parent().parent().attr("id") == "top-navigation" || 
		document.body.getAttribute("id") == "front-body")
		ddmenuitem.css("margin-left", (parent.width() / 2) - (ddmenuitem.width() / 2));
}

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()
{  
	$('#top-navigation .nav-list > li').bind('mouseover', jsddm_open);
	$('#top-navigation .nav-list > li').bind('mouseout',  jsddm_timer);
	$('#sec-navigation .nav-list > li').bind('mouseover', jsddm_open);
	$('#sec-navigation .nav-list > li').bind('mouseout',  jsddm_timer);
});