diff --git a/src/basic/Point.js b/src/basic/Point.js
index 1d7d409e..d56990b6 100644
--- a/src/basic/Point.js
+++ b/src/basic/Point.js
@@ -24,7 +24,7 @@ var Point = Base.extend({
 				this.x = this.y = 0;
 			}
 		} else {
-			this.x = this.y = 0;	
+			this.x = this.y = 0;
 		}
 	},
 
@@ -107,7 +107,7 @@ var Point = Base.extend({
 			this.y *= scale;
 		}
 	},
-	
+
 	normalize: function(length) {
 		if (length === null)
 			length = 1;
@@ -118,16 +118,16 @@ var Point = Base.extend({
 		res._angle = this._angle;
 		return res;
 	},
-	
+
 	getAngleInRadians: function() {
 		return Math.atan2(this.y, this.x);
 	},
-	
+
 	getAngleInDegrees: function() {
 		return Math.atan2(this.y, this.x) * 180 / Math.PI;
 	},
-	
-	
+
+
 	getQuadrant: function() {
 		if (this.x >= 0) {
 			if (this.y >= 0) {
@@ -143,7 +143,7 @@ var Point = Base.extend({
 			}
 		}
 	},
-	
+
 	setAngle: function(angle) {
 		angle = this._angle = angle * Math.PI / 180;
 		if (!this.isZero()) {
@@ -183,7 +183,7 @@ var Point = Base.extend({
 			return angle;
 		}
 	},
-	
+
 	rotate: function(angle) {
 		angle = angle * Math.PI / 180;
 		var s = Math.sin(angle);
diff --git a/src/basic/Rectangle.js b/src/basic/Rectangle.js
index 1730a8b8..300f7c76 100644
--- a/src/basic/Rectangle.js
+++ b/src/basic/Rectangle.js
@@ -45,182 +45,182 @@ Rectangle = Base.extend({
 			this.x = this.y = this.width = this.height = 0;
 		}
 	},
-	
+
 	getPoint: function() {
 		return new Point(this.x, this.y);
 	},
-	
+
 	setPoint: function() {
 		var point = Point.read(arguments);
 		this.x = point.x;
 		this.y = point.y;
 	},
-	
+
 	getSize: function() {
 		return new Size(this.width, this.height);
 	},
-	
+
 	setSize: function() {
 		var size = Size.read(arguments);
 		this.width = size.width;
 		this.height = size.height;
 	},
-	
+
 	getLeft: function() {
 		return this.x;
 	},
-	
+
 	setLeft: function(left) {
 		// right should not move
 		this.width -= left - this.x;
 		this.x = left;
 	},
-	
+
 	getTop: function() {
 		return this.y;
 	},
-	
+
 	setTop: function(top) {
 		this.height -= top - this.y;
 		this.y = top;
 	},
-	
+
 	getRight: function() {
 		return this.x + this.width;
 	},
-	
+
 	setRight: function(right) {
 		this.width = right - this.x;
 	},
-	
+
 	getBottom: function() {
 		return this.y + this.height;
 	},
-	
+
 	setBottom: function(bottom) {
 		this.height = bottom - this.y;
 	},
-	
+
 	getCenterX: function() {
 		return this.x + this.width * 0.5;
 	},
-	
+
 	setCenterX: function(x) {
 		this.x = x - this.width * 0.5;
 	},
-	
+
 	getCenterY: function() {
 		return this.y + this.height * 0.5;
 	},
-	
+
 	setCenterY: function(y) {
 		this.y = y - this.height * 0.5;
 	},
-	
+
 	getCenter: function() {
 		return new Point(this.x - this.width / 2, this.y - this.height / 2);
 	},
-	
+
 	setCenter: function() {
 		var center = Point.read(arguments);
 		this.x = center.x - this.width / 2;
 		this.y = center.y - this.height / 2;
 	},
-	
+
 	getTopLeft: function() {
 		return new Point(this.left, this.top);
 	},
-	
+
 	setTopLeft: function() {
 		var topLeft = Point.read(arguments);
 		this.left = topLeft.x;
 		this.top = topLeft.y;
 	},
-	
+
 	getTopRight: function() {
 		return new Point(this.right, this.top);
 	},
-	
+
 	setTopRight: function() {
 		var topRight = Point.read(arguments);
 		this.right = topRight.x;
 		this.top = topRight.y;
 	},
-	
+
 	getBottomLeft: function() {
 		return new Point(this.left, this.bottom);
 	},
-	
+
 	setBottomLeft: function() {
 		var bottomLeft = Point.read(arguments);
 		this.left = bottomLeft.x;
 		this.bottom = bottomLeft.y;
 	},
-	
+
 	getBottomRight: function() {
 		return new Point(this.right, this.bottom);
 	},
-	
+
 	setBottomRight: function() {
 		var bottomRight = Point.read(arguments);
 		this.bottom = bottomRight.y;
 		this.right = bottomRight.x;
 	},
-	
+
 	getLeftCenter: function() {
 		return new Point(this.left, this.centerY);
 	},
-	
+
 	setLeftCenter: function() {
 		var leftCenter = Point.read(arguments);
 		this.left = leftCenter.x;
 		this.centerY = leftCenter.y;
 	},
-	
+
 	getTopCenter: function() {
 		return new Point(this.centerX, this.top);
 	},
-	
+
 	setTopCenter: function() {
 		var topCenter = Point.read(arguments);
 		this.centerX = topCenter.x;
 		this.top = topCenter.y;
 	},
-	
+
 	getRightCenter: function() {
 		return new Point(this.right, this.centerY);
 	},
-	
+
 	setRightCenter: function() {
 		var rightCenter = Point.read(arguments);
 		this.right = rightCenter.x;
 		this.centerY = rightCenter.y;
 	},
-	
+
 	getBottomCenter: function() {
 		return new Point(this.centerX, this.bottom);
 	},
-	
+
 	setBottomCenter: function() {
 		var bottomCenter = Point.read(arguments);
 		this.bottom = bottomCenter.y;
 		this.centerX = bottomCenter.x;
 	},
-	
+
 	clone: function() {
 		return new Rectangle(this);
 	},
-	
+
 	equals: function() {
 		var rect = Rectangle.read(arguments);
 		return this.x == rect.x && this.y == rect.y
 				&& this.width == rect.width && this.height == rect.height;
 	},
-	
+
 	isEmpty: function() {
 		return this.width == 0 || this.height == 0;
 	},
-	
+
 	contains: function(rect) {
 		if (rect.width !== undefined) {
 			return rect.x >= this.x && rect.y >= this.y
@@ -233,7 +233,7 @@ Rectangle = Base.extend({
 					&& point.y <= this.y + this.height;
 		}
 	},
-	
+
 	intersects: function() {
 		var rect = Rectangle.read(arguments);
 		return rect.x + rect.width > this.x
@@ -241,7 +241,7 @@ Rectangle = Base.extend({
 				&& rect.x < this.x + this.width
 				&& rect.y < this.y + this.height;
 	},
-	
+
 	intersect: function() {
 		var rect = Rectangle.read(arguments);
 		var x1 = Math.max(this.x, rect.x);
@@ -250,7 +250,7 @@ Rectangle = Base.extend({
 		var y2 = Math.min(this.y + this.height, rect.y + rect.height);
 		return new Rectangle(x1, y1, x2 - x1, y2 - y1);
 	},
-	
+
 	unite: function() {
 		var rect = Rectangle.read(arguments);
 		var x1 = Math.min(this.x, rect.x);
@@ -259,7 +259,7 @@ Rectangle = Base.extend({
 		var y2 = Math.max(this.y + this.height, rect.y + rect.height);
 		return new Rectangle(x1, y1, x2 - x1, y2 - y1);
 	},
-	
+
 	include: function() {
 		var point = Point.read(arguments);
 		var x1 = Math.min(this.x, point.x);
@@ -268,7 +268,7 @@ Rectangle = Base.extend({
 		var y2 = Math.max(this.y + this.height, point.y);
 		return new Rectangle(x1, y1, x2 - x1, y2 - y1);
 	},
-	
+
 	toString: function() {
 		return '{ x: ' + this.x
 				+ ', y: ' + this.y
@@ -276,7 +276,7 @@ Rectangle = Base.extend({
 				+ ', height: ' + this.height
 				+ ' }';
 	},
-	
+
 	statics: {
 		read: function(args, index) {
 			var index = index || 0, length = args.length - index;
diff --git a/src/basic/Size.js b/src/basic/Size.js
index a953cb0b..bba0a88d 100644
--- a/src/basic/Size.js
+++ b/src/basic/Size.js
@@ -20,10 +20,10 @@ var Size = Base.extend({
 				this.width = this.height = 0;
 			}
 		} else {
-			this.width = this.height = 0;	
+			this.width = this.height = 0;
 		}
 	},
-	
+
 	add: function() {
 		var size = Size.read(arguments);
 		return new Size(this.width + size.width, this.height + size.height);