diff -r 4c0c01da763d -r d382dacfd73f rt/vm/src/test/java/org/apidesign/vm4brwsr/BytesLoader.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/vm/src/test/java/org/apidesign/vm4brwsr/BytesLoader.java	Tue Feb 26 16:54:16 2013 +0100
@@ -0,0 +1,76 @@
+/**
+ * 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.vm4brwsr;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.util.Enumeration;
+import java.util.Set;
+import java.util.TreeSet;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public final class BytesLoader {
+    private static Set<String> requested = new TreeSet<String>();
+
+    public byte[] get(String name) throws IOException {
+        if (!requested.add(name)) {
+            throw new IllegalStateException("Requested for second time: " + name);
+        }
+        byte[] arr = readClass(name);
+        /*
+        System.err.print("loader['" + name + "'] = [");
+        for (int i = 0; i < arr.length; i++) {
+        if (i > 0) {
+        System.err.print(", ");
+        }
+        System.err.print(arr[i]);
+        }
+        System.err.println("]");
+         */
+        return arr;
+    }
+
+    static byte[] readClass(String name) throws IOException {
+        URL u = null;
+        Enumeration<URL> en = BytesLoader.class.getClassLoader().getResources(name);
+        while (en.hasMoreElements()) {
+            u = en.nextElement();
+        }
+        if (u == null) {
+            throw new IOException("Can't find " + name);
+        }
+        try (InputStream is = u.openStream()) {
+            byte[] arr;
+            arr = new byte[is.available()];
+            int offset = 0;
+            while (offset < arr.length) {
+                int len = is.read(arr, offset, arr.length - offset);
+                if (len == -1) {
+                    throw new IOException("Can't read " + name);
+                }
+                offset += len;
+            }
+            return arr;
+        }
+    }
+    
+}