var timeout    = 300;
var closetimer = 0;
var ddmenuitem = 0;

function jsddm_open()
{
    jsddm_canceltimer();
    jsddm_close();
    ddmenuitem = $(this).find('ul').css('visibility', 'visible');

    $(this).find('a').addClass('apxHover');
}

function jsddm_close()
{
    if (ddmenuitem)
    {
        ddmenuitem.css('visibility', 'hidden');
    }

    $('#nav-main > li a').removeClass('apxHover');
}

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

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

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

document.onclick = jsddm_close;