var timeout    = 700;
var closetimer = 0;
var ddmenuitem = 0;

function jsddm_open()
{
	var currentElement = jQuery("ul",this);
	
	jsddm_canceltimer();
	
	if( ddmenuitem && currentElement != ddmenuitem )
	{
		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(document).ready(function($)
{
	$('#navigation-menu > li:has(ul)').bind('mouseover', jsddm_open);
	$('#navigation-menu > li:has(ul)').bind('mouseout',  jsddm_timer);
});

document.onclick = jsddm_close;