User-agent: Googlebot-Image
Disallow: / 

User-agent: *
Disallow: /*.gif$
Disallow: /*.jpg$
Disallow: /*.jpeg$
Disallow: /*.png$

Disallow: /images/
Disallow: /inc/
Disallow: /scripts/
Disallow: /css/
Disallow: /templates/
Disallow: /admin/