>Yep, works well, thanks. I tested on IE6, FF1.0.4 and Opera8.01 and
>they all handle the HTTP_REFERER function.
Test it with firewalls in operation and you'll notice that HTTP_REFERER
can be deleted or faked. Further, there's a good chance a Windows
user won't be able to turn off that operation in the firewall even
if they wanted to.