diff --git a/lib/bootstrap.js b/lib/bootstrap.js
index c77e7ade..f1632e5c 100644
--- a/lib/bootstrap.js
+++ b/lib/bootstrap.js
@@ -18,7 +18,7 @@ var Base = this.Base = new function() {
 		proto = Object.prototype,
 		has = fix 
 			? function(name) {
-				return name != '__proto__' && this.hasOwnProperty(name);
+				return name !== '__proto__' && this.hasOwnProperty(name);
 			}
 			: proto.hasOwnProperty,
 		toString = proto.toString,
@@ -77,7 +77,7 @@ var Base = this.Base = new function() {
 		function field(name, val, dontCheck, generics) {
 			var val = val || (val = describe(src, name))
 					&& (val.get ? val : val.value),
-				func = typeof val == 'function', res = val,
+				func = typeof val === 'function', res = val,
 				prev = preserve || func
 					? (val && val.get ? name in dest : dest[name]) : null;
 			if (generics && func && (!preserve || !generics[name])) {
@@ -164,7 +164,7 @@ var Base = this.Base = new function() {
 	function iterator(iter) {
 		return !iter
 			? function(val) { return val }
-			: typeof iter != 'function'
+			: typeof iter !== 'function'
 				? function(val) { return val == iter }
 				: iter;
 	}
diff --git a/src/basic/Matrix.js b/src/basic/Matrix.js
index d1b18982..89e4e13b 100644
--- a/src/basic/Matrix.js
+++ b/src/basic/Matrix.js
@@ -111,7 +111,7 @@ var Matrix = this.Matrix = Base.extend({
 	 * @return {Matrix} This affine transform.
 	 */
 	scale: function(sx, sy /* | scale */, center) {
-		if (arguments.length < 2 || typeof sy == 'object') {
+		if (arguments.length < 2 || typeof sy === 'object') {
 			// sx is the single scale parameter, representing both sx and sy
 			// Read center first from argument 1, then set sy = sx (thus
 			// modifing the content of argument 1!)
@@ -170,7 +170,7 @@ var Matrix = this.Matrix = Base.extend({
 	 */
 	shear: function(shx, shy, center) {
 		// See #scale() for explanation of this:
-		if (arguments.length < 2 || typeof shy == 'object') {
+		if (arguments.length < 2 || typeof shy === 'object') {
 			center = Point.read(arguments, 1);
 			sy = sx;
 		} else {
diff --git a/src/browser/Element.js b/src/browser/Element.js
index d15fa2a8..dcc42f5a 100644
--- a/src/browser/Element.js
+++ b/src/browser/Element.js
@@ -35,7 +35,7 @@ var Element = {
 
 	getScrollBounds: function() {
 		var doc = document.getElementsByTagName(
-				document.compatMode == 'CSS1Compat' ? 'html' : 'body')[0];
+				document.compatMode === 'CSS1Compat' ? 'html' : 'body')[0];
 		return Rectangle.create(
 			window.pageXOffset || doc.scrollLeft,
 			window.pageYOffset || doc.scrollTop,
diff --git a/src/color/Color.js b/src/color/Color.js
index 7cb5931f..b8b53d1b 100644
--- a/src/color/Color.js
+++ b/src/color/Color.js
@@ -62,7 +62,7 @@ var Color = this.Color = Base.extend(new function() {
 
 		initialize: function(arg) {
 			var isArray = Array.isArray(arg);
-			if (typeof arg == 'object' && !isArray) {
+			if (typeof arg === 'object' && !isArray) {
 				if (!this._colorType) {
 					// Called on the abstract Color class. Guess color type
 					// from arg
@@ -83,7 +83,7 @@ var Color = this.Color = Base.extend(new function() {
 							? color.convert(this._colorType)
 							: color;
 				}
-			} else if (typeof arg == 'string') {
+			} else if (typeof arg === 'string') {
 				var rgbColor = arg.match(/^#[0-9a-f]{3,6}$/i)
 						? hexToRGBColor(arg)
 						: nameToRGBColor(arg);
@@ -112,7 +112,7 @@ var Color = this.Color = Base.extend(new function() {
 									? value
 									// TODO: Is this correct?
 									// Shouldn't alpha be set to -1?
-									: name == 'alpha' ? 1 : null;
+									: name === 'alpha' ? 1 : null;
 						}, this);
 				}
 			}
@@ -177,7 +177,7 @@ var Color = this.Color = Base.extend(new function() {
 			for (var i = 0, l = this._components.length; i < l; i++) {
 				var component = this._components[i];
 				var value = this['_' + component];
-				if (component == 'alpha' && value == null)
+				if (component === 'alpha' && value == null)
 					value = 1;
 				string += (i > 0 ? ', ' : '') + component + ': ' + value;
 			}
@@ -186,7 +186,7 @@ var Color = this.Color = Base.extend(new function() {
 
 		toCssString: function() {
 			if (!this._cssString) {
-				var color = this._colorType == 'rgb'
+				var color = this._colorType === 'rgb'
 						? this
 						: this.convert('rgb');
 				var alpha = color.getAlpha();
diff --git a/src/color/GradientColor.js b/src/color/GradientColor.js
index 11486eab..b75c3c84 100644
--- a/src/color/GradientColor.js
+++ b/src/color/GradientColor.js
@@ -66,7 +66,7 @@ var GradientColor = this.GradientColor = Color.extend({
 
 	getCanvasStyle: function(ctx) {
 		var gradient;
-		if (this.gradient.type == 'linear') {
+		if (this.gradient.type === 'linear') {
 			gradient = ctx.createLinearGradient(this._origin.x, this._origin.y,
 				this.destination.x, this.destination.y);
 		} else {
diff --git a/src/item/Item.js b/src/item/Item.js
index a3054248..5ccadcee 100644
--- a/src/item/Item.js
+++ b/src/item/Item.js
@@ -613,7 +613,7 @@ var Item = this.Item = Base.extend({
 	 */
 	scale: function(sx, sy /* | scale */, center) {
 		// See Matrix#scale for explanation of this:
-		if (arguments.length < 2 || typeof sy == 'object') {
+		if (arguments.length < 2 || typeof sy === 'object') {
 			center = sy;
 			sy = sx;
 		}
@@ -646,7 +646,7 @@ var Item = this.Item = Base.extend({
 	shear: function(shx, shy, center) {
 		// TODO: Add support for center back to Scriptographer too!
 		// See Matrix#scale for explanation of this:
-		if (arguments.length < 2 || typeof sy == 'object') {
+		if (arguments.length < 2 || typeof sy === 'object') {
 			center = shy;
 			shy = shx;
 		}
@@ -766,7 +766,7 @@ var Item = this.Item = Base.extend({
 
 				// If the item has a blendMode, use BlendMode#process to
 				// composite its canvas on the parentCanvas.
-				if (item.blendMode != 'normal') {
+				if (item.blendMode !== 'normal') {
 					// The pixel offset of the temporary canvas to the parent
 					// canvas.
 					var pixelOffset = itemOffset.subtract(param.offset);
@@ -922,7 +922,7 @@ var Item = this.Item = Base.extend({
 			var hash = {};
 			hash[handler] = function(event) {
 				// Always clear the drag set on mouse-up
-				if (name == 'up')
+				if (name === 'up')
 					sets.drag = {};
 				removeAll(sets[name]);
 				sets[name] = {};
@@ -950,7 +950,7 @@ var Item = this.Item = Base.extend({
 					sets[name][this.getId()] = this;
 					// Since the drag set gets cleared in up, we need to make
 					// sure it's installed too
-					if (name == 'drag')
+					if (name === 'drag')
 						installHandler('up');
 					installHandler(name);
 				}
diff --git a/src/item/Raster.js b/src/item/Raster.js
index c85b4ee9..f6625d92 100644
--- a/src/item/Raster.js
+++ b/src/item/Raster.js
@@ -25,7 +25,7 @@ var Raster = this.Raster = Item.extend({
 			this.setCanvas(object);
 		} else {
 			// If it's a string, get the element with this id first.
-			if (typeof object == 'string')
+			if (typeof object === 'string')
 				object = document.getElementById(object);
 			this.setImage(object);
 		}
diff --git a/src/load.js b/src/load.js
index c7850c2b..c9e604a6 100644
--- a/src/load.js
+++ b/src/load.js
@@ -102,7 +102,7 @@ if (window.tests) {
 for (var i = 0; i < sources.length; i++) {
 	document.write('<script type="text/javascript" src="' + (window.root || '') 
 			+ sources[i] + '"></script>');
-	if (sources[i] == 'src/paper.js') {
+	if (sources[i] === 'src/paper.js') {
 		// Activate paper.debug for code loaded through load.js, as we're in
 		// development mode.
 		document.write('<script type="text/javascript">'
diff --git a/src/path/Path.js b/src/path/Path.js
index 97cff426..d8cd911e 100644
--- a/src/path/Path.js
+++ b/src/path/Path.js
@@ -25,7 +25,7 @@ var Path = this.Path = PathItem.extend({
 		// If it is an array, it can also be a description of a point, so
 		// check its first entry for object as well
 		this.setSegments(!segments || !Array.isArray(segments)
-				|| typeof segments[0] != 'object' ? arguments : segments);
+				|| typeof segments[0] !== 'object' ? arguments : segments);
 	},
 
 	/**
@@ -674,7 +674,7 @@ var Path = this.Path = PathItem.extend({
 			// Get the start point:
 			var current = getCurrentSegment(this),
 				through;
-			if (arguments[1] && typeof arguments[1] != 'boolean') {
+			if (arguments[1] && typeof arguments[1] !== 'boolean') {
 				through = Point.read(arguments, 0, 1);
 				to = Point.read(arguments, 1, 1);
 			} else {
@@ -987,7 +987,7 @@ var Path = this.Path = PathItem.extend({
 					handleOut = segment.getHandleOutIfSet();
 				// When both handles are set in a segment, the join setting is
 				// ignored and round is always used.
-				if (join == 'round' || handleIn && handleOut) {
+				if (join === 'round' || handleIn && handleOut) {
 					bounds = bounds.unite(joinBounds.setCenter(matrix
 						? matrix.transform(segment._point) : segment._point));
 				} else {
@@ -1033,7 +1033,7 @@ var Path = this.Path = PathItem.extend({
 						normal = curve.getNormal(t).normalize(radius);
 					// For square caps, we need to step away from point in the
 					// direction of the tangent, which is the rotated normal
-					if (cap == 'square')
+					if (cap === 'square')
 						point = point.add(normal.y, -normal.x);
 					add(point.add(normal));
 					add(point.subtract(normal));
diff --git a/src/ui/Key.js b/src/ui/Key.js
index 68346a32..b3cda918 100644
--- a/src/ui/Key.js
+++ b/src/ui/Key.js
@@ -29,7 +29,7 @@ var Key = new function() {
 	
 	Event.add(document, Base.each(['keyDown', 'keyUp'], function(type) {
 		var toolHandler = 'on' + Base.capitalize(type),
-			keyDown = type == 'keyDown';
+			keyDown = type === 'keyDown';
 		this[type.toLowerCase()] = function(event) {
 			var code = event.which || event.keyCode,
 				key = keys[code] || String.fromCharCode(code).toLowerCase();