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

function jsddm_open()
{  jsddm_canceltimer();
   jsddm_close();
   ddmenuitem = $(this).find('ul').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;
	}
}

$(document).ready(function()
{ 
	$('#jsddm > li').bind('mouseover', jsddm_open);
   	$('#jsddm > li').bind('mouseout',  jsddm_timer);
});

document.onclick = jsddm_close;