var timeout = 300;
var closetimer = 0;
var ddmenuitem = 0;
function jsddm_open() {
    jsddm_canceltimer();
    jsddm_close();
    ddmenuitem = $(this).find('ul').eq(0).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;
    } 
}
$(document).ready(function () {
    $('#jsddm > li').bind('mouseover', jsddm_open)
    $('#jsddm > li').bind('mouseout', jsddm_timer)
});
document.onclick = jsddm_close;