function _parse_extensions($content)
    {
        // Replace single tags ONLY using a Negative Lookahead
        if (preg_match_all('%(?!{ext:(\w+?).*?\}.*?{/ext:\1}){ext:(\w+)\s?(.*?)}%s', $content, $matches, PREG_SET_ORDER))
        {
            foreach($matches as $match)
            {
                if ( $extension = Cms::getExtension('cms_' . $match[2] . '_ext'))
                {
                    $class = new $extension['class']();
                    $params = $this->parse_params($match[3]);
                    $class->initialize($params, null, $this);
                    $out = $class->parse();
                    $content = str_replace($match[0], $out, $content);
                }
            }
        }
        // Check if we have a set of loop tags
        if (preg_match_all('%(?={ext:(\w+?).*?}.*?{/ext:\1}){ext:(.*?)\s(.*?)}(.*?){/ext:.*?}%s', $content, $matches, PREG_SET_ORDER))
        {
            debug($matches); exit;
            foreach($matches as $match)
            {
                if ( $extension = Cms::getExtension('cms_' . $match[1] . '_ext'))
                {
                    $class = new $extension['class']();
                    $params = $this->parse_params($match[2]);
                    $class->initialize($params, trim($match[3]), $this);
                    $out = $class->parse();
                    $content = str_replace($match[0], $out, $content);
                }
            }
        }
        return $content;
    }