Viewing visited pages offline

I used to be able to view the web pages that I had visited during a browsing session later, offline, simply by clicking on the appropriate page in my history. Now I'm using Firefox I can't do this. When I click on a page in my history nothing happens. How can I make sure that all the pages I view remain in my Temporary Internet files or the Firefox cache so I can see them again until I empty them?

Open Firefox, go to File and click "Work Offline." You should then be able to view the pages in Firefox's history so long as they're still in the cache. If you've emptied the cache or have it set to empty the cache every time Firefox is closed, there won't be anything to view.

Thanks very much. It's so easy when you know how.