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

function dropdown_open()
{	dropdown_canceltimer();
	dropdown_close();
	ddmenuitem = $(this).find('ul').eq(0).css('visibility', 'visible');
	if($.browser.msie === true && $.browser.version == 7) {
		ddmenuitem.css('margin-left', -$(this).width());
	}
}

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

function dropdown_timer()
{	closetimer = window.setTimeout(dropdown_close, timeout);}

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

$(document).ready(function()
{	$('#dropdown > li').bind('mouseover', dropdown_open);
	$('#dropdown > li').bind('mouseout',  dropdown_timer);
}
);

document.onclick = dropdown_close;