Firefox doesn't support the standard focusin and focusout events. There's an open bug: https://bugzilla.mozilla.org/show_bug.cgi?id=687787 https://bugzilla.mozi

Firefox doesn't support the standard focusin and focusout events. There's an open bug: https://bugzilla.mozilla.org/show_bug.cgi?id=687787 https://bugzilla.mozilla.org/show_bug.cgi?id=687787 I made this for a native WebKit project I'm working on so Firefox support wasn't a priority, but it hopefully wouldn't be too hard to add. I'll look into it later if I have a chance. Or, pull requests are welcome!