Hi.
In an attempt to prevent users from using the "back" button, I use pragma, cache control and expires html directives. I have it working both for my machine and my other friends machine, whose clocks are closely syncronized together. However, I also use a lab computer. This lab computer's clock is not closely syncronized to the server, and as a result, the expiration does not work as it should. The expiry comand is: http-eqiv="expires" content="-1".
Anyone have any clue what is going on, or how I can fix what is going on? (I know this post is slightly off topic from perl, but the w3c site is unacessiable from work today... damn red alert.)