var timeout         = 500;
var closetimer		= 0;
var ddnavitem      = 0;

function nav_open(){
	nav_canceltimer();
	nav_close();
	ddnavitem = jQuery(this).find('ul').eq(0).css('visibility', 'visible');
}

function nav_close(){
	if(ddnavitem) ddnavitem.css('visibility', 'hidden');
}

function nav_timer(){
	closetimer = window.setTimeout(nav_close, timeout);
}

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

jQuery(document).ready(function(){
	//jQuery('#nav > li').bind('mouseover', nav_open());
	//jQuery('#nav > li').bind('mouseout',  nav_timer());
});

// document.onclick = nav_close();