Keep page from going back (JS)

[Arc]

Hey guys.

I have a sign up page (multiple pages) and the last page basicaly shows the account info and has all the code that inserts them into the database. I would like to keep them from going back to the last page because if they hit the submit button on that page again they will be added to the database twice and I can't have that.

Is there a way to keep this from happening via javascript?

thanks!

[JPnyc]

Not a reliable way, no.

[Merve]

Why not use PHP to check if the same record is being added to the database twice?