Disable <back page> function with <backspace key> on website

When navigating on my website, I need code to disable the function when pressing the key on the computer. The coding should be inserted in the html code of the pages I need this block. Can be done on JavaScript or similar. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Installation package that will install the software (in ready-to-run condition) on the platform(s) specified in this bid request. 3) Complete ownership and distribution copyrights to all work purchased. ## Platform Internet Explorer 5.0 and later Windows 2000 and XP