# File lib/nicovideo/videopage.rb, line 18
    def type
      @params ||= get_params
      pattern = %r!^http://.*\.nicovideo\.jp/smile\?(.*?)=.*$!
      CGI.unescape(@params['url']) =~ pattern
      case $1
      when 'm'
        return 'mp4'
      when 's'
        return 'swf'
      else
        return 'flv'
      end
    end