iOS 4 Compatibility broken?

[touchbee]

Just ran this nice little library on an iOS 4.3 device and noticed a crash:

In the actionButton method of UAModalPanel:
-[UIImage resizableImageWithCapInsets:]: unrecognized selector sent to instance

[UIImage resizableImageWithCapInsets] is iOS 5+ only.

[coneybeare]

Yup. I haven't gotten around to fixing it. If you do, please submit a pull-request.