Fix a Firefox bug caused by a previous focus fix.

[coling]

...ocus fix causes Firefox Security Manager veto.

[scottgonzalez]

Closing since we don't have a test case that shows the problem.

[gnarf]

Not to mention, I'm not a fan of the catch & release...

[scottgonzalez]

@gnarf37 I agree the try/catch around the whole block is bad. We can wrap the $.contains() call as that should never throw under normal circumstances. I'll see if there's anything else we can do that won't throw, but so far nothing is working. It's annoying that even with the try/catch we'll lose focus though.

[gnarf]

Focus on <input type="file"> is iffy at best I think.

[scottgonzalez]

@gnarf37 Why is that? Just because it's inconsistent across browsers? I think it's fine if we have to lose focus. There's absolutely nothing we can do here. This is a major bug, I'm surprised that Mozilla has let it site; it totally breaks the use document.activeElement.