diff --git a/build/build.sh b/build/build.sh
index 310e5254..61ea9123 100755
--- a/build/build.sh
+++ b/build/build.sh
@@ -20,4 +20,5 @@ then
 	mkdir ../out/
 fi
 
+./preprocess.sh ../src/build.js ../out/paper-browser.js "-DBROWSER" $MODE
 ./preprocess.sh ../src/build.js ../out/paper.js "" $MODE
diff --git a/build/preprocess.sh b/build/preprocess.sh
index 6cecbe00..d24f4081 100755
--- a/build/preprocess.sh
+++ b/build/preprocess.sh
@@ -17,7 +17,7 @@
 #	compressed		No comments and no whitespaces
 #	compiled		Uses Google Closure Compiler to reduce file size even more
 
-KEYWORD="#"
+KEYWORD="//#"
 
 case $4 in
 	stripped)
diff --git a/src/build.js b/src/build.js
index aa63cb35..e882d0e5 100644
--- a/src/build.js
+++ b/src/build.js
@@ -1,43 +1,44 @@
 var paper = new function() {
 
-#include "paper.js"
+//#include "paper.js"
 
-#include "basic/Point.js"
-#include "basic/Size.js"
-#include "basic/Rectangle.js"
-#include "basic/Matrix.js"
+//#include "basic/Point.js"
+//#include "basic/Size.js"
+//#include "basic/Rectangle.js"
+//#include "basic/Matrix.js"
 
-#include "document/DocumentView.js"
-#include "document/Document.js"
-#include "document/Symbol.js"
+//#include "document/DocumentView.js"
+//#include "document/Document.js"
+//#include "document/Symbol.js"
 
-#include "item/Item.js"
-#include "item/Group.js"
-#include "item/Layer.js"
-#include "item/Raster.js"
-#include "item/PlacedSymbol.js"
-#include "item/PathStyle.js"
+//#include "item/Item.js"
+//#include "item/Group.js"
+//#include "item/Layer.js"
+//#include "item/Raster.js"
+//#include "item/PlacedSymbol.js"
+//#include "item/PathStyle.js"
 
-#include "path/Segment.js"
-#include "path/Curve.js"
-#include "path/PathItem.js"
-#include "path/Path.js"
-#include "path/CompoundPath.js"
-#include "path/Path.Constructors.js"
+//#include "path/Segment.js"
+//#include "path/Curve.js"
+//#include "path/PathItem.js"
+//#include "path/Path.js"
+//#include "path/CompoundPath.js"
+//#include "path/Path.Constructors.js"
 
-#include "color/Color.js"
-#include "color/RGBColor.js"
-#include "color/GrayColor.js"
-#include "color/GradientColor.js"
-#include "color/Gradient.js"
-#include "color/GradientStop.js"
+//#include "color/Color.js"
+//#include "color/RGBColor.js"
+//#include "color/GrayColor.js"
+//#include "color/GradientColor.js"
+//#include "color/Gradient.js"
+//#include "color/GradientStop.js"
 
-#include "tool/ToolEvent.js"
-#include "tool/ToolHandler.js"
-#include "tool/Tool.js"
+//#include "tool/ToolEvent.js"
+//#include "tool/ToolHandler.js"
+//#include "tool/Tool.js"
 
-#include "util/CanvasProvider.js"
-#include "util/MathUtils.js"
+//#include "util/CanvasProvider.js"
+//#include "util/MathUtils.js"
+//#include "util/PaperScript.js"
 
 // Inject all prototypes from the paper scope into the paper object.
 return Base.each(['Point', 'Size', 'Rectangle', 'Matrix', 'DocumentView',
diff --git a/src/util/PaperScript.js b/src/util/PaperScript.js
new file mode 100644
index 00000000..f2cd67db
--- /dev/null
+++ b/src/util/PaperScript.js
@@ -0,0 +1,54 @@
+var PaperScript = new function() {
+	function compile(code) {
+		return code;
+	}
+
+	function run(code) {
+		with (paper) {
+			return eval(compile(code));
+		}
+	}
+
+//#ifdef BROWSER
+	// Code borrowed from Coffee Script:
+	function load(url) {
+		var xhr = new (window.ActiveXObject || XMLHttpRequest)('Microsoft.XMLHTTP');
+		xhr.open('GET', url, true);
+		if ('overrideMimeType' in xhr) {
+			xhr.overrideMimeType('text/plain');
+		}
+		xhr.onreadystatechange = function() {
+			if (xhr.readyState === 4) {
+				return run(xhr.responseText);
+			}
+		};
+		return xhr.send(null);
+	}
+
+	function runScripts() {
+		var scripts = document.getElementsByTagName('script');
+		for (var i = 0, l = scripts.length; i < l; i++) {
+			var script = scripts[i];
+			if (script.type === 'text/paperscript') {
+				if (script.src) {
+					load(script.src);
+				} else {
+					run(script.innerHTML);
+				}
+			}
+		}
+		return null;
+	}
+
+	if (window.addEventListener) {
+		addEventListener('DOMContentLoaded', runScripts, false);
+	} else {
+		attachEvent('onload', runScripts);
+	}
+//#endif // BROWSER
+
+	return {
+		compile: compile,
+		run: run
+	};
+};