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

function main_list_open(){	
	main_list_canceltimer();
	main_list_close();
	$(this).find('a').eq(0).addClass("main_border");
	ddmenuitem = $(this).find('ul').eq(0).css('visibility', 'visible');
	$(this).find('div.menu_border_bottom').css('visibility', 'visible');
}

function main_list_close(){		
	if(ddmenuitem){
		ddmenuitem.css('visibility', 'hidden');
		$("a.main_border").removeClass("main_border");
		$("div.menu_border_bottom").css('visibility', 'hidden');	
	}  
}

function main_list_timer()
{	closetimer = window.setTimeout(main_list_close, timeout);}

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

$(document).ready(function()
{	$('#main_list > li').bind('mouseover', main_list_open);
	$('#main_list > li').bind('mouseout',  main_list_timer);});

document.onclick = main_list_close;