I need to get the solution to allow all jpg files to display but not the site, In google images it brings up grey blocks , only clicking on the grey block it does show the image........

How do I get this right, I have in the conf file of squid

acl blocksites dstdomain .facebook.com
acl goodsites dstdomain .google.co.za .google.com
# Allow jpg
acl pictures url_regex -i .*\.jpg$

http_access allow pictures
http_access allow goodsites
http_access deny blocksites
http_access deny all

you help will be appreciated