hook('afterParseCode', function ($html) { return preg_replace("/
/i", "", $html);
            });

            $parser->hook('beforeParseInline', function ($html) use ($parser) {
                return preg_replace_callback("/^\s*\s*$/s", function ($matches) use ($parser) {
                    return $parser->makeHolder('');
                }, $html);
            });

            $parser->enableHtml(true);
            $parser->_commonWhiteList .= '|img|cite|embed|iframe';
            $parser->_specialWhiteList = array_merge($parser->_specialWhiteList, array(
                'ol'            =>  'ol|li',
                'ul'            =>  'ul|li',
                'blockquote'    =>  'blockquote',
                'div'           =>  'div',
                'p'             =>  'p',
                'h1'            =>  'h1',
                'h2'            =>  'h2',
                'h3'            =>  'h3',
                'h4'            =>  'h4',
                'h5'            =>  'h5',
                'h6'            =>  'h6',
                'pre'           =>  'pre|code'
            ));
        }

        return str_replace('
', '', $parser->makeHtml($text));
    }

    /**
     * transerCodeClass
     * 
     * @param string $html
     * @return string
     */
    public static function transerCodeClass($html)
    {
        return preg_replace("//i", "", $html);
    }

    /**
     * @param $html
     * @return mixed
     */
    public static function transerComment($html)
    {
        return preg_replace_callback("//s", array('Markdown', 'transerCommentCallback'), $html);
    }

    /**
     * @param $matches
     * @return string
     */
    public static function transerCommentCallback($matches)
    {
        return self::$parser->makeHolder($matches[0]);
    }
}