protected function generateUserAgentMetaTags()
    {
        if (!empty($this->tsSetupSeo['ieCompatibilityMode'])) {
            if (is_numeric($this->tsSetupSeo['ieCompatibilityMode'])) {
                $this->metaTagList['ua.msie.compat'] = array(
                    'tag'        => 'meta',
                    'attributes' => array(
                        'http-equiv' => 'X-UA-Compatible',
                        'content'    => 'IE=EmulateIE' . (int)$this->tsSetupSeo['ieCompatibilityMode'],
                    ),
                );
            } else {
                $this->metaTagList['ua.msie.compat'] = array(
                    'tag'        => 'meta',
                    'attributes' => array(
                        'http-equiv' => 'X-UA-Compatible',
                        'content'    => $this->tsSetupSeo['ieCompatibilityMode'],
                    ),
                );
            }
        }
    }