FULL PRODUCT VERSION :
JRE 1.6.0_02

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
Focus is lost when a JDialog is shown in an applet on Windows XP & vista platform using Firefox browser. This doesn't happen in IE or the appletviewer. Also, this doesn't happen in Firefox on Fedora platform. The problem is there with JRE 1.4.xx, 1.5.xx and 1.6.xx

There seems to be a problem the way WNetscapeEmbeddedFrame is handling the focus especially after a dialog (modal) is displayed. The Firefox version is 2.0.0.4.

After the dialog is displayed, the user has to explicitly click to bring focus back to the applet once the dialog is dismissed. In appletviewer and IE, the focus comes back automatically once the dialog is dismissed.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Open the provided applet in Firefox browser using an html page.
2. Click in the applet to bring it to focus. Type in letters in the textarea to make sure it has the focus. Don't type "a" at this time.
3. Now, type "a". It will bring a dialog.
4. Dismiss/close the dialog.
5. Resume typing other keys but nothing is displayed in the textarea since it doesn't have the focus.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The key characters should have been displayed in the applet text area after the dialog is closed (as it happens in IE or appletviewer).
ACTUAL -
No characters are displayed in the textarea once the dialog is dimissed

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.border.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class TestApplet extends JApplet {

    Frame myframe = null;

    public void init() {

        myframe = JOptionPane.getFrameForComponent(this);
        Container c = this.getContentPane();
        c.setLayout(new BorderLayout());
        JTextArea t = new JTextArea();
t.setBorder(new BevelBorder(BevelBorder.LOWERED));
t.addKeyListener(new KeyAdapter() {
public void keyReleased(KeyEvent e) {
if(e.getKeyCode() == KeyEvent.VK_A) {
JDialog dialog = new JDialog(myframe, "Frame owner", true);
                 dialog.setSize(200, 100);
                 dialog.setLocationRelativeTo(myframe);
                 dialog.setVisible(true);
}
}
});
c.add(t, BorderLayout.CENTER);
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
After closing the dialog, explicitly click in the applet to bring the focus back to it.