User-Agent: Googlebot-Image
Disallow: /

User-agent: Mediapartners-Google*
Disallow:

User-agent: *
Disallow: /robots-txt-surfers-come-here/
Disallow: /images/
Disallow: /inc/
Disallow: /script/
Disallow: /style/
#These are actually invalid
#Disallow: *.jpg
#Disallow: *.jpeg
#Disallow: *.gif
#Disallow: *.bmp
#Disallow: *.png