This is a neat add-on for Firefox that shows a pop up on tabs and enables you to preview and navigate tab contents through a pop up ! Some features include , real-time preview of tab contents , navigate (Back/Forward/Reload/Stop) through a pop up , scroll pages or frames in preview with mouse wheel and click links or buttons directly in preview ! It's available right here ^_- https://addons.mozilla.org/en-US/fire... Enjoy !