var timeout         = 0;
var closetimer		= 0;
var ddmenuitem      = 0;
var ddmenuitemBot      = 0;

function mainNav_open()
{	mainNav_canceltimer();
	mainNav_close();
	ddmenuitem = jQuery(this).find('ul').eq(0).css('visibility', 'visible'); 
	ddmenuitemBot = jQuery(this).find('ul').eq(1).css('visibility', 'visible');
}

function mainNav_close()
{	if(ddmenuitem) ddmenuitem.css('visibility', 'hidden'); if(ddmenuitemBot) ddmenuitemBot.css('visibility', 'hidden');}

function mainNav_timer()
{	closetimer = window.setTimeout(mainNav_close, timeout);}

function mainNav_canceltimer()
{	if(closetimer)
	{	window.clearTimeout(closetimer);
		closetimer = null;}}

jQuery(document).ready(function()
{	jQuery('#mainNav > li').bind('mouseover', mainNav_open);
	jQuery('#mainNav > li').bind('mouseout',  mainNav_timer);});

document.onclick = mainNav_close;