Description of Rewiring the Back Button :
This is an article that shows users how to redirect their site visitors to another page when they click the back button. In this tutorial the author says that some times a submitted form has to be expired to prevent users from navigating back, mostly it is allowed for the visitors to expire the form by clicking the back button, but we can redirect them to another ASP page while they click the back button. It is said the Netscape browser supports this redirecting feature with the cache facility in META tags.