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

function jsddm_open() {
    jsddm_canceltimer();
    jsddm_close();
    ddmenuitem = $(this).find('ul').eq(0);
    ddmenuitem.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;
    }
}

function jsddm_init(selector){
    var $elm = $(selector + ' > li');
    $elm.bind('mouseover', jsddm_open);
    $elm.bind('mouseout',  jsddm_timer);
    $(document).click(jsddm_close);
}