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

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

document.onclick = jsddm_close;