User-agent: *
Disallow: /*.pdf$
Disallow: /*.doc$
Disallow: /*.gif$
Disallow: /*.jpg$
Disallow: /*.wmv$
Disallow: /*.mov$
Disallow: /*.mp3$
Disallow: /secure/
Disallow: /preview/
Disallow: /subscribe/

User-Agent: Googlebot-Image
Disallow: /secure/ 

User-agent: ia_archiver
Disallow: /