public function tracker($name = 'default')
    {
        $key = 'endroid_google_analytics.'.$name;

        if (!$this->container->hasParameter($key)) {
            return '';
        }

        $tracker = $this->container->getParameter($key);
        $tracker['name'] = $name;

        $html = $this->container->get('templating')->render('EndroidGoogleAnalyticsBundle::tracker.html.twig', array('tracker' => $tracker, 'loadGa' => $this->firstTracker));

        $this->firstTracker = false;

        return $html;
    }