Sessions Question!

So I have user restricted area to my website. The login works great with the session data being passed. I also have a logout button. I notice that when I logout I can still click the back button on the browser and you can see the previous users restricted data. How do I prevent this from happening. Below is the Script I am using to destroy the session data. //Unset all of the global variables! session_unset; //Destroy the session session_destroy(); Matt G -- Matthew Gonzales IT Professional Specialist Enterprise Information Technology Services University of Georgia Email: matt323@uga.edu <mailto:matt323@uga.edu> Phone: (706)542-9538