Block Access to Previous Pages

We have a Game project with over 500 pages of php code. We require a "simple" easy to implement method for detecting and stopping in its tracks the use of the "Back" button to go back to previous pages. We do not want to block redirects by the code when we sometimes send them back but stop users from cheating by attempting to “back ??" back?? there way out of a situation. We would like a simple solution. Java would be nice and acceptable. IF it is Java we will also need a simple method for detecting if Java is disabled and if so sending them to a specific dead end page. We were somewhat short sighted whilst building our game to the destructive use of "Back" and even refresh in some instances. Refresh we have got around with SQL DB table entries but back is a more complex creature for us due to the volume of pages. We do not want to have to go through 500+ pages of php code adding snippets where they apply. We would rather a blanketing method be found and used. We will appreciate the Developer to have an understanding that we are NOT programmers and that we need some guidance and testing to be carried out. So not a simple "cut paste" use this thank you where’s my money. We are dedicated to stomping out the use of back and with use of a Java fix and a Java disabled re-direction would seem our first choice. But we are here to ask for YOUR guidance in this matter. What ever we come up with must work in both IE, FF and if possible Opera. More information will be provided upon request. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform To work on Client side : IE (6+), FF and if possible Opera.