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

function jsddm_open() {
    jsddm_canceltimer();
    jsddm_close();

    ddmenuitem = $(this).find('ul').css('visibility', 'visible');
    ddmenuitem.css('opacity', 0.95);
    ddmenuitem.css('border', '1px solid #CCCCCC');
    ddmenuitem.css('z-index', '100');
}

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() {
    $('#midNav > ul > li').bind('mouseover', jsddm_open)
    $('#midNav > ul > li').bind('mouseout', jsddm_timer)
});

document.onclick = jsddm_close;