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;