User-agent: Googlebot
      Disallow: /*.jpg$

      User-agent: Googlebot
      Disallow: /*.gif$

      User-agent: Googlebot
      Disallow: /*.doc$

      User-agent: Googlebot
      Disallow: /*.pdf$

      User-agent: Googlebot
      Disallow: /*.mpg$

      User-agent: Googlebot
      Disallow: /*.mpeg$

      User-agent: Googlebot
      Disallow: /*.avi$

      User-agent: Googlebot
      Disallow: /*.png$