User-agent: Googlebot-Image
Disallow: /

User-agent: psbot
Disallow: /

User-agent: *
Crawl-delay: 20 
Disallow:/class/
Disallow:/flash/
Disallow:/js/
Disallow:/gallery/
Disallow:/plugins/
Disallow:/templates/
Disallow:/tmp/
Disallow:/imgs/
Disallow:/config/
Disallow:/install/
Disallow:/styles/
Disallow:/locale/

User-agent: Slurp
Crawl-delay: 90