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;
	}
}