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

function jsddm_open()
{	jsddm_canceltimer();
	jsddm_close();
	ddmenuitem = $(this).getElement('ul')
    ddmenu = $(this).getElement('a');
    ddmenu.addClass('hover');
    if(ddmenuitem) ddmenuitem.setStyle('visibility', 'visible');
}

function jsddm_close()
{
    if(ddmenuitem) ddmenuitem.setStyle('visibility', 'hidden');
    if(ddmenu) ddmenu.removeClass('hover');
}

function jsddm_timer()
{	
    closetimer = window.setTimeout(jsddm_close, timeout);
}

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

//using conservative onload method since mootools has not been loaded yet
var oldWindowOnload = window.onload;
window.onload = function() {
    $$('#siteMenuUl > li').addEvent('mouseover', jsddm_open);
	$$('#siteMenuUl > li').addEvent('mouseout',  jsddm_timer);

    document.addEvent('click', jsddm_close);

    if(oldWindowOnload) oldWindowOnload();
}