User-agent: *
Disallow: /_private/
Disallow: /images/
Disallow: /cgi-bin/
Disallow: /oldpages/
Disallow: /docs/
Disallow: /internal
Disallow: favicon.ico

User-agent: Googlebot 
Disallow: /*.xls$
Disallow: /*.xlsx$
Disallow: /*.jpg$
Disallow: /*.gif$
Disallow: /*.png$
Disallow: /*.psd$