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

function jsddm_open()
{
    jsddm_canceltimer();
    jsddm_close();
    ddmenuitem = $(this).find('div').css('display', 'block');
}

function jsddm_close()
{
    if(ddmenuitem) ddmenuitem.css('display', 'none');
}

function jsddm_timer()
{
    closetimer = window.setTimeout(jsddm_close, timeout);
}

function jsddm_canceltimer()
{
    if(closetimer)
    {
        window.clearTimeout(closetimer);
        closetimer = null;
    }
}

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

document.onclick = jsddm_close;