How to prevent from navigating to a page after reaching Login page using back button?
I have created 2 pages,
1) Lo gin Page
2)Page with link to open pdf files
When i lo-gin,it takes me to 2nd page where there are buttons that opens pdf files in new window.The problem is when i goback to user login page using back button and agin click browser forward button,the 2nd page session gets expired but on next click on forward button,the pdf document opens..But i dont want it to happen.Instead,it should again ask for login.
Please provide me a better code to attain desired soulution