thisTab!

A small extension for Mozilla Firefox which forces a link with a target="_blank" attribute to open in the current tab.

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linkbackimage

An extension to view the background image of a link within Mozilla firefox. In July 2007 Jason Beaird Lamented the lack of a 'View Background Image' context menu item when a link element was right-clicked. I'd just finished developing my thisTab extension, so I modified it to produce what Jason wanted. Jason now maintains the official fork of the project - he's vastly improved the functionality as well as making it FF2/3 compatible.