diff --git a/contrib/build.php b/contrib/build.php
index 2802e50..81dd788 100755
--- a/contrib/build.php
+++ b/contrib/build.php
@@ -28,6 +28,7 @@
 	if (file_exists('acptemplate.tar')) unlink('acptemplate.tar');
 	foreach (glob('file/acp/be.bastelstu.chat.nodePush/lib/*.js') as $nodeFile) unlink($nodeFile);
 	foreach (glob('file/js/*.js') as $jsFile) unlink($jsFile);
+	foreach (glob('file/acp/js/*.js') as $jsFile) unlink($jsFile);
 	if (file_exists('be.bastelstu.chat.tar')) unlink('be.bastelstu.chat.tar');
 echo <<<EOT
 
@@ -42,6 +43,17 @@
 }
 echo <<<EOT
 
+Building ACP-JavaScript
+-----------------------
+
+EOT;
+foreach (glob('file/acp/js/*.{litcoffee,coffee}', GLOB_BRACE) as $coffeeFile) {
+	echo $coffeeFile."\n";
+	passthru('coffee -c '.escapeshellarg($coffeeFile), $code);
+	if ($code != 0) exit($code);
+}
+echo <<<EOT
+
 Compressing JavaScript
 ----------------------
 
@@ -53,6 +65,17 @@
 }
 echo <<<EOT
 
+Compressing ACP-JavaScript
+--------------------------
+
+EOT;
+foreach (glob('file/acp/js/*.js', GLOB_BRACE) as $jsFile) {
+	echo $jsFile."\n";
+	passthru('uglifyjs '.escapeshellarg($jsFile).' --screw-ie8 -m -c --verbose --comments -o '.escapeshellarg(substr($jsFile, 0, -3).'.min.js'), $code);
+	if ($code != 0) exit($code);
+}
+echo <<<EOT
+
 Checking PHP for Syntax Errors
 ------------------------------
 
@@ -122,3 +145,4 @@
 if (file_exists('acptemplate.tar')) unlink('acptemplate.tar');
 foreach (glob('file/acp/be.bastelstu.chat.nodePush/lib/*.js') as $nodeFile) unlink($nodeFile);
 foreach (glob('file/js/*.js') as $jsFile) unlink($jsFile);
+foreach (glob('file/acp/js/*.js') as $jsFile) unlink($jsFile);