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

function jsddm_open()
{
	jsddm_canceltimer();
	jsddm_close();
	ddmenuitem = jQuery('ul',this).css('visibility', 'visible');
}

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;
	}
}

jQuery(function(){
	jQuery('ul.dropdown > li:has(ul)').bind('mouseover', jsddm_open);
	jQuery('ul.dropdown > li:has(ul)').bind('mouseout',  jsddm_timer);
});

document.onclick = jsddm_close;