To avoid this problem, Firefox users can use and upgrade to Firefox 2, which has improved tabbed browsing features. Among the features is ability for users to re-open an accidentally closed tab by using a shortcut Ctrl+Shift+T, or by right clicking on the tab bar, the select Undo Close Tab. Firefox 2 will cache and keep track of a list of recently closed tabs in the History menu so that after the web page in the tab has been closed, but Firefox can still retrieves it and displays the web page on the new tab.
If you’re using Firefox 1.5 which doesn’t have the ‘reopen closed tabs’ feature, you have to install Firefox extension (plugin) that provides this capability in order for Firefox 1.5 or Firefox 1.6 users to allow recently closed tabs to be reopened feature. Among the plug-ins or Firefox extensions that have this feature are:
Session Manager(no longer available) undoclosetab 20040617(no longer available and not updated since 2004, you may need to read through the comments to find updated version by other users). Tab Clicking Options(no longer available)
- undoclosetab 20051204
Tab Mix(no longer available)
- Tab Mix Plus
- Undo Closed Tabs Button
Most of these Firefox add-ons offer more than simply allow users to reopen (accidentally) closed windows and tabs, or after the tab or window crashes.