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Firefox

If you are using recently released Mozilla Firefox 3.6 or 4.0 version, you might have noticed that it supports Taskbar preview thumbnails for each tab in Windows 7, i.e. Firefox shows preview thumbnails for each tab when you hover mouse cursor over its taskbar button as shown in following screenshot:



If you want Enable or Disable this feature, follow this:
  1. Open firefox and type about:config in the addressbar and press Enter. It’ll confirm, click on I’ll be careful, I promise! button.
  2. Now type taskbar in the Filter box. It’ll show following entries:
    browser.taskbar.previews.cachetime
    browser.taskbar.previews.enable
    browser.taskbar.previews.max
  3. Now:
    • If you want Enable this feature, Double-Click (or right-click on it and select "Toggle") "browser.taskbar.previews.enable" to set it to True
    • If you want Disable this feature, Double-Click (or right-click on it and select "Toggle") "browser.taskbar.previews.enable" to set it to False

  4. If you disable it. Now Firefox will no longer show preview thumbnails for each tab in Taskbar.


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