Sheni,
I needed to do a similar thing as this. When creating the form have a hidden
value which is the current time. The when procesing the form check the time.
If its to old just say page expired.
I found this worked fine. Hope this helps.
Paul
""Sheni R. Meledath"" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Hi,
>
> I have set up a form to register the users to the site. The users are
> allowed to register only once. When the user submits the form the same
> script will check the validity of the form and displays error messages and
> if okay, updates the database.
> I want to set up an option in the form in which when the user once submits
> and after that if they click on the back button (browser back) it should
> say the 'page expired' as I have seen with some Perl scripts. The users
> should not be allowed to go back to the page and resubmit. Can any body
> suggest a way to accomplish this.
>
> thanks
> Sheni R Meledath
> [EMAIL PROTECTED]
>
>
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