Hi friend , I think the following will help you. If u have any clarification please get back to me. Firts Way:
---------------- for security and privacy reason the history collection has very limited exposure in a browser. You could start with disabling the caching by putting this in the head of the pages: <META HTTP-EQUIV="Pragma" CONTENT="no-cache">
<META HTTP-EQUIV="Expires" CONTENT="-1"> to eleimnate old versions of pages from the cache Seconde Way :
--------------- you could try disabling the backspace key as you mention in your first post key <body >
put the above code in each of your sites pages
means that if the body has focus and someone presses backspace then the
code runs and the backspace is nullified and the user doesn't navigate back.
Third Way :
------------------
<script language="_javascript_"><!--
_javascript_:window.history.forward(1);
//--></script>
use the code in each nad every HTML page this in will restrict the Back
button in Broser All the best cheers from chezhian.R | 
