diff -r 000000000000 -r f18b7262fe91 launcher/fx/src/main/java/org/apidesign/bck2brwsr/launcher/fximpl/JVMBridge.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/launcher/fx/src/main/java/org/apidesign/bck2brwsr/launcher/fximpl/JVMBridge.java	Sun Apr 28 17:42:49 2013 +0200
@@ -0,0 +1,64 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.launcher.fximpl;
+
+import java.util.TooManyListenersException;
+import javafx.beans.value.ChangeListener;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public final class JVMBridge {
+    private static ClassLoader[] ldrs;
+    private static ChangeListener<Void> onBck2BrwsrLoad;
+        
+    public static void registerClassLoaders(ClassLoader[] loaders) {
+        ldrs = loaders.clone();
+    }
+    
+    public static void addBck2BrwsrLoad(ChangeListener<Void> l) throws TooManyListenersException {
+        if (onBck2BrwsrLoad != null) {
+            throw new TooManyListenersException();
+        }
+        onBck2BrwsrLoad = l;
+    }
+
+    public static void onBck2BrwsrLoad() {
+        ChangeListener<Void> l = onBck2BrwsrLoad;
+        if (l != null) {
+            l.changed(null, null, null);
+        }
+    }
+    
+    public Class<?> loadClass(String name) throws ClassNotFoundException {
+        System.err.println("trying to load " + name);
+        ClassNotFoundException ex = null;
+        if (ldrs != null) for (ClassLoader l : ldrs) {
+            try {
+                return Class.forName(name, true, l);
+            } catch (ClassNotFoundException ex2) {
+                ex = ex2;
+            }
+        }
+        if (ex == null) {
+            ex = new ClassNotFoundException("No loaders");
+        }
+        throw ex;
+    }
+}