parental controls & Facebook but . . .

I successfully setup controls to block Facebook but need Google Docs available for homework assignments on a laptop running 10.6. For some reason Google Docs is also blocked even through Facebook.com is the only site blocked. I tried adding several Google Doc URL's for login, etc. to the approved list but still can't get access.

Here's what I did.

Parent Controls: Web: checked "Try to limit access to adult websites automatically":

Customize . . . added never allow these websites: http://facebook.com

Always allow these websites:

https://docs.google.com/

I also set time limits from 10PM to 6AM.

Appreciate any help - Roger