> Hi forum, i have a problem with forms. My client fills a form and then
> submit once it is complete, then it redirects to another page  some
> users sometime clicks on the IE back button. So if the page is back the
> form is load again and its filled with same data, so user can submit
> again and the information can be duplicated. How can i avoid it? I
> would like to show something like it expired or maybe catch the action
> (click on the back button) and inhabilate the action.
>
> Someone solve a problem like this?
>
> Thanks in advanced.
>