Consuner JRE : Load an applet having an awt button. The click event on that button brings up a dialog. The dialog itself has a button which is used for disposing the dialog window.
Once the dialog is disposed the focus should go back to the parent applet button. In case of Mozilla/Firefox the focus does not go back to the parent applet button after disposal if the dialog window. The focus just get lost from the applet and goes to the address bar.

Try out the case with the code in attachment...