User-agent: Mediapartners-Google*
Disallow:

User-agent: *
Disallow: /mainsite/admin.php
Disallow: /mainsite/admin/
Disallow: /mainsite/images/
Disallow: /mainsite/includes/
Disallow: /mainsite/themes/
Disallow: /mainsite/blocks/
Disallow: /mainsite/language/
Disallow: /mainsite/modules/