public function openOrchestraJs($themeId)
    {
        $tags = '';

        if (isset($this->themes[$themeId]) && isset($this->themes[$themeId]['javascripts'])) {
            $javascripts = $this->themes[$themeId]['javascripts'];
            foreach ($javascripts as $javascript) {
                $tags .= $this->getHtmlTag($javascript, self::FILETYPE_JS);
            }
        }

        return $tags;
    }