protected function renderContent()
    {
        foreach ($this->httpEquivs as $name => $content)
            echo CHtml::metaTag($content, null, $name);

        if ($this->_title !== null)
            echo CHtml::tag('title', array(), is_array($this->_title) ? implode($this->titleSeparator, $this->_title) : $this->_title);

        if ($this->_description !== null)
            echo CHtml::metaTag($this->_description, 'description');

        if ($this->_keywords !== null)
            echo CHtml::metaTag($this->_keywords, 'keywords');

        foreach ($this->_properties as $name => $content)
            echo CHtml::tag('meta', array('property' => $name, 'content' => $content));

        if ($this->_canonical !== null)
            echo CHtml::linkTag('canonical', null, $this->_canonical);
    }