var Ring = Container.expand(function (i) {
	var self = Container.call(this);
	var ringGraphics = self.createAsset('ring', 'Ring for the game', 0.5, 0.5);
	ringGraphics.scale.x = 1 - i * 0.2;
	var colors = [0xFF0000, 0xFF7F00, 0xFFFF00, 0x00FF00, 0x0000FF];
	ringGraphics.tint = colors[Math.floor(Math.random() * colors.length)];
});
var Stack = Container.expand(function () {
	var self = Container.call(this);
	self.rings = [];
	var stackBG = self.createAsset('background', 'Background for the game', 0.5, 0.5);
	self.addRing = function (ring) {
		if (self.rings.length < 5) {
			self.rings.push(ring);
			self.addChild(ring);
			ring.y = 358 / 2 - self.rings.length * ring.height + ring.height / 2;
		}
	};
	self.removeRing = function () {
		if (self.rings.length > 0) {
			var ring = self.rings.pop();
			ring.destroy();
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	self.stacks = [];
	var stackContainer = self.addChild(new Container());
	stackContainer.x = 368 / 2 + 79;
	stackContainer.y = 368 / 2 + 500;
	for (var row = 0; row < 5; row++) {
		for (var col = 0; col < 5; col++) {
			var stack = stackContainer.addChild(new Stack());
			stack.x = col * (stack.width + 10);
			stack.y = row * (stack.height + 10);
			for (var i = 0; i < 5; i++) {
				var ring = new Ring(i);
				stack.addRing(ring);
			}
			self.stacks.push(stack);
		}
	}
});

===================================================================
--- original.js
+++ change.js
@@ -12,9 +12,9 @@
 	self.addRing = function (ring) {
 		if (self.rings.length < 5) {
 			self.rings.push(ring);
 			self.addChild(ring);
-			ring.y = 358 / 2 - self.rings.length * ring.height + ring.height / 2 - 5;
+			ring.y = 358 / 2 - self.rings.length * ring.height + ring.height / 2;
 		}
 	};
 	self.removeRing = function () {
 		if (self.rings.length > 0) {