I would like to be able to define arbitrary keyboard shortcuts in Firefox, including overriding some of the already built-in shortcuts (such as Ctrl + W to close a tab).
How can I accomplish this? I've found a few plug-ins that add specific additional short cuts, but none that are fully editable. I also couldn't find anything in any of the options menu to do so, though I'd be surprised if this was a feature that was built-in.
For reference (if needed): Firefox 3.0.12 CentOS 5.2