/**** 
* Classes
****/ 
var Background = Container.expand(function () {
	var self = Container.call(this);
	var backgroundGraphics = self.attachAsset('platform', {
		anchorX: 0.0,
		anchorY: 0.0
	});
	self.speed = -2;
	self.update = function () {
		self.x += self.speed;
		if (self.x <= -2048) {
			self.x = 2048;
		}
	};
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -2;
	self.update = function () {
		self.x += self.speed;
	};
});
var Platform = Container.expand(function () {
	var self = Container.call(this);
	var platformGraphics = self.attachAsset('platform', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('mario', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.jumpHeight = 10;
	self.isJumping = false;
	self.update = function () {
		if (self.isJumping) {
			self.y -= self.jumpHeight;
			self.jumpHeight -= 0.5;
			if (self.jumpHeight <= 0) {
				self.isJumping = false;
				self.jumpHeight = 10;
			}
		}
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
var player = game.addChild(new Player());
player.x = 100;
player.y = 100;
var background1 = game.addChild(new Background());
background1.x = 0;
background1.y = 0;
var background2 = game.addChild(new Background());
background2.x = 2048;
background2.y = 0;
var enemy = game.addChild(new Enemy());
enemy.x = 500;
enemy.y = 200;

===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,21 @@
 /**** 
 * Classes
 ****/ 
+var Background = Container.expand(function () {
+	var self = Container.call(this);
+	var backgroundGraphics = self.attachAsset('platform', {
+		anchorX: 0.0,
+		anchorY: 0.0
+	});
+	self.speed = -2;
+	self.update = function () {
+		self.x += self.speed;
+		if (self.x <= -2048) {
+			self.x = 2048;
+		}
+	};
+});
 var Enemy = Container.expand(function () {
 	var self = Container.call(this);
 	var enemyGraphics = self.attachAsset('enemy', {
 		anchorX: 0.5,
@@ -52,10 +66,13 @@
 ****/ 
 var player = game.addChild(new Player());
 player.x = 100;
 player.y = 100;
-var platform = game.addChild(new Platform());
-platform.x = 100;
-platform.y = 200;
+var background1 = game.addChild(new Background());
+background1.x = 0;
+background1.y = 0;
+var background2 = game.addChild(new Background());
+background2.x = 2048;
+background2.y = 0;
 var enemy = game.addChild(new Enemy());
 enemy.x = 500;
 enemy.y = 200;
\ No newline at end of file