unify/unify — pull request #121 by dominikg (2012-04-04 12:47:57+00:00)
Title: updated requestAnimationFrame emulation to stay closer to 60fps

adapted from ideas by Paul Irish and Erik Möller: http://paulirish.com/2011/requestanimationframe-for-smart-animating/

1. take execution time of callbacks into acount by lowering timeout value for next loop iteration
2. use for loop to scan for vendor prefixed implementations