<tip author="Brian Cummiskey" type="FireBug Extention for FireFox"> We've all been using the web developer tool bar for some time now, but with new technologies, it has some features that some developers may like. Introducing the FireBug tool by Joe Hewitt. https://addons.mozilla.org/extensions/moreinfo.php?id=1843&application=firefox This tool has most of the WD tool bar classics, and also has AJAX tools and new features for JS errors. </tip>