User-agent: ia_archiver
Disallow: /
User-agent: ia_archiver/1.6
Disallow: /
User-agent: *
Disallow: /css
Allow: /images
User-agent: msnbot 
Disallow: /*.css$ 
Allow: /*.images$
User-agent: Slurp
Allow: /images/
Disallow: /css/