Applet fails to call Javascript methods

I'm trying to implement round-trip javascript to Java to Javascript using LiveConnect, and having a lot of trouble in Firefox. It works perfectly in IE 6. In Firefox, I can successfully call a method of an applet, and get a return value. I have not been able to get the applet to call a Javascript method. I have tried using both the call and eval methods of the JSObject with no luck. Below is my code. Any suggestions would be appreciated.
Thanks.
import java.applet.Applet;
import java.awt.*;
import netscape.javascript.*;
public class test extends Applet {
     String message="Hello Universe!";
     JSObject proxy;
     public void paint(Graphics g) {
          g.drawString(message, 20, 20);
     // pass in ref to JS object on which to call method
     public Boolean handshake(JSObject jso) {
          proxy = jso;
          // try just calling straight eval
          proxy.eval("alert('eval')");
          // set up args object to pass to js method
          Object[] args = new Object[1];
          args[0] = "handshake";
          // call method of js object 2 different ways
          proxy.call("callback", args);
          proxy.eval("o.callback('eval')");
          return true;
     // update java display to show JS to J communication
     public void setMessage(String message) {
          this.message = message;
          repaint();
<html>
<head>
     <script>
          // js object to receive calls from applet
          function obj() {};
          obj.prototype = new Object();
          obj.prototype.callback = function(arg) {
               alert("callback: " + arg);
          function doit() {
               var a = gebi("myApplet");
               a.setMessage("Goodbye World!");
               o = new obj();
               // test that js method works (it does)
               o.callback("local");
               // call applet method which should call back to js method
               var there = a.handshake(o);
               // show return value from applet method call
               alert("there: " + there);
          window.onload = doit;
     </script>
</head>
<body>
     <applet
          id="myApplet"
          code="test"
          width="400"
          height="50"
          mayscript="mayscript">
     </applet>
</body>
</html>Results:
In both IE and Firefox, the string shown by the applet switches to "goodbye world", the local call to the callback function works, and the call to handshake returns true.
That's all that works in Firefox.
In IE, the various calls to the callback method, and to the alert method of the Javascript all work.
The results are the same whether I run the HTML page as a local file, or through IIS.
I have also noticed that Firefox seems to hang up, crash, and just have a lot of problems dealing with this code.
Finally, I am running all of this on XP professional SP1 with J2SE 1.5.0_04-b05 and Firefox 1.07

Hi,
Thanks for all your replies. Does this work on Java 5 too? Could you please share the complete code snippet which makes it work? I tried working on yours but no success.
Regards,
Alok

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