Firefox: don't allow websites to override the / (slash) key

Some websites override the behavior of the '/' key in Firefox. Normally this opens the incremental search toolbar at the bottom of the page. But on some websites it places the cursor in a search box on the site itself. How can I prevent this?

Solution 1:

This Q is definitely addressed by the comments, so I'll rehash in a useful way:

You can disable gmail's shortcuts with Mail Settings -> General -> Keyboard Shortcuts if that's interferring.

You can always use ctrl+F or just the ' (apostrophe character) too.

If you have further examples, put some out there, but I haven't found this behavior.

Useful links:
Firefox's help on searching
Syntax to tweak your about:config data in Firefox here