diff -r 437df2a719e7 -r 1376481f15e7 vm/src/main/java/org/apidesign/vm4brwsr/GenJS.java
--- a/vm/src/main/java/org/apidesign/vm4brwsr/GenJS.java	Tue Oct 09 18:47:42 2012 -0700
+++ b/vm/src/main/java/org/apidesign/vm4brwsr/GenJS.java	Tue Oct 16 11:55:56 2012 +0200
@@ -58,8 +58,11 @@
                 if (name.startsWith("java/")
                     && !name.equals("java/lang/Object")
                     && !name.equals("java/lang/Class")
+                    && !name.equals("java/lang/Math")
                     && !name.equals("java/lang/Number")
                     && !name.equals("java/lang/Integer")
+                    && !name.equals("java/lang/Float")
+                    && !name.equals("java/lang/Double")
                     && !name.equals("java/lang/Throwable")
                     && !name.equals("java/lang/Exception")
                     && !name.equals("java/lang/RuntimeException")
@@ -116,7 +119,6 @@
                 }
             }
         }
-        
     }
     private static void readResource(InputStream emul, Appendable out) throws IOException {
         try {