[jbrackett]

I'm seeing the issue using Firefox 16.0.2 on OSX Lion.

[dragongraphics]

Very strange - I'm on same version here.

I'm going to add a width counter to give more feedback on the resizing, as seems to be a bit of a bottleneck.

[eric_the_read]

It seems the minimum reported by window.innerWidth on 16.0.2 (OS X, 10.8.2) is 453. Once it hits that, I can drag it all the smaller I like, and it is stuck at 453.