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

function jsddm_open() {
  jsddm_canceltimer();
  jsddm_close();
  ddmenuitem = $(this).find('ul').css('visibility', 'visible');
  ddmenulink = $(this).find('a:first').addClass('menuactive');
}

function jsddm_close() {
  if(ddmenulink) ddmenulink.removeClass('menuactive');
  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;
  }
}