r keys = [];
	var prizes = [];
	var prizeWon = false;

	window.requestAnimFrame = (function(callback){
		return window.requestAnimationFrame ||
		window.webkitRequestAnimationFrame ||
		window.mozRequestAnimationFrame ||
		window.oRequestAnimationFrame ||
		window.msRequestAnimationFrame ||
		function(callback){
			window.setTimeout(callback, 33.333);	//1000 / 30
		};
	})();

	function animate(){
		crane.Update();
		for(var i=0; i<prizes.length; i++){
			prizes[i].Update();
			prizes[i].Repaint();
		}

		cr