Examples of how to do accessible html5 canvas UI

These quick and dirty examples use JS, DOM, ARIA, and canvas.

Example 1: Wrap canvas in ARIA-ified container Example 2: Canvas in controller
TODO: Example 2.1 where mirror DOM elements are tabbable (not requiring aria-activedescendant).

Special note: these examples where inspired by talks with Aaron Leventhal and everyone else, and probably other examples (e.g. Faulkner's), and probably the mozilla developer site. Feel free to use them at your own risk.