What version of Chrome are you using? Copy from about:version page

Chrome: version 12.0.742.91 8-Bit Hits: version 1.1.4

What steps will reproduce the problem?

The Z key is mapped to the A button on the NES controller, and the X button is mapped to the B button on the NES controller.

What is the expected output? What do you see instead?

The mapping of the buttons should be reversed.

Just uploaded version 1.15 which fixes the reverse A and B controls, and also includes the ability to customize you controls as you see fit