diff -r 8dce385fd361 -r 5a0768a5e095 rt/emul/compact/src/main/java/java/lang/System.java
--- a/rt/emul/compact/src/main/java/java/lang/System.java	Sun Sep 08 11:23:45 2013 +0200
+++ b/rt/emul/compact/src/main/java/java/lang/System.java	Wed Sep 18 11:20:57 2013 +0200
@@ -17,6 +17,8 @@
  */
 package java.lang;
 
+import org.apidesign.bck2brwsr.core.JavaScriptBody;
+
 /** Poor man's re-implementation of most important System methods.
  *
  * @author Jaroslav Tulach <jtulach@netbeans.org>
@@ -33,6 +35,10 @@
         return org.apidesign.bck2brwsr.emul.lang.System.currentTimeMillis();
     }
     
+    public static long nanoTime() {
+        return org.apidesign.bck2brwsr.emul.lang.System.nanoTime();
+    }
+    
     public static int identityHashCode(Object obj) {
         return obj.defaultHashCode();
     }
@@ -56,8 +62,8 @@
     public static String lineSeparator() {
         return "\n";
     }
-    
-    public static long nanoTime() {
-        return org.apidesign.bck2brwsr.emul.lang.System.nanoTime();
+
+    @JavaScriptBody(args = { "exitCode" }, body = "window.close();")
+    public static void exit(int exitCode) {
     }
 }