>Might depend on the browser. See: http://stackoverflow.com/questions/2638292/after-travelling-back-in-firefox-history-javascript-wont-run

Thanks, I am not sure it is the same thing. In my case, this is not the javascript being disabled but the HTML that was added to the page which is not persisting in the cache. Basically, the cache stores the content of the page initially loaded. But, it does not consider the added HTML.