I know next to nothing about JavaScript and was wondering if someone could help me out.

I have a login page to a site on our intranet that I created using code from javascript.internet.com. I was wondering how to force a visitor to perform a succesful login. In other words, If a user enters their Username and Password correctly and are sent to Page1.htm, I don't want that person to be able to bookmark Page1.htm to bypass the login page.

Thanks!