SkipJohnson, if you have a router, try entering the router administration configuration.
Your router may have filtering software or the ability to block specific URL's.
Look through the Safari settings and see if you can find something for internet filtering, specifically a RASCI setting, or other identifying software.
Also, if that doesn't work, switch to FireFox, and then go to the following URL:
https://addons.mozilla.org/en-US/firefox/search?q=parental&status=4Download FireFox at:
http://www.mozilla.com/en-US/firefox/You will find that FireFox is more capable than Safari... Safari is very limited, and just not very supportive of all scripting.