Applet opens a form doesn't allow keyboard input

Hi,
I testing something so everything I've done is really simple. I wrote a JApplet that has a JMenubar. Selecting a menu item opens a new webpage which contains an HTML form. The form has 2 radio buttons and a text field. The problem is I can't type anything into the text field. Press keys just causes the computer to go "ding" at me.
If I open a new browser for the form the text field is accessible. I want to keep the form in the same window. What's wrong with my code?
<applet>
import java.applet.Applet;
import java.awt.Graphics;
import javax.swing.*;
import javax.swing.JApplet.*;
import java.awt.event.*;
import java.net.*;
public class MenuApplet extends JApplet
StringBuffer buffer;
public void init()
buffer = new StringBuffer();
/* addItem("init..."); */
try
javax.swing.SwingUtilities.invokeAndWait(new Runnable()
{public void run()
{createMenu();}
catch (Exception e)
{ System.err.println("createMenu didn't successfully complete"); }
void createMenu()
JMenuBar jmb = new JMenuBar();
setJMenuBar(jmb);
JMenu menu = new JMenu("Listings");
jmb.add(menu);
JMenuItem contactList = new JMenuItem("Contacts");
menu.add(contactList);
JMenuItem customerList = new JMenuItem("Customers");
menu.add(customerList);
contactList.addActionListener(new ActionListener()
{ public void actionPerformed(ActionEvent ae)
{ boolean good;
good = linkTo("file:///c:/1.private/pages/testform.html");
void addItem(String newWord)
System.out.println(newWord);
buffer.append(newWord);
repaint();
private boolean linkTo(String theURLString)
try
URL theURL = new URL(theURLString);
getAppletContext().showDocument(theURL);
catch(MalformedURLException e)
System.out.println("Bad URL: " + theURLString + "\n");
return false;
return true;
</applet>
<html>
<HTML>
<HEAD>
<TITLE></TITLE>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="generator" content="CSE HTML Validator Professional (http://www.htmlvalidator.com/)">
</HEAD>
<BODY>
<APPLET CODE="MenuApplet.class" WIDTH="100%" HEIGHT="25px"></APPLET>
</BODY>
</HTML>
</html>
<html form>
<HTML>
<HEAD>
<TITLE>Testing forms</TITLE>
</HEAD>
<BODY ONLOAD="document.tf.criteria.focus()">

<FORM NAME="tf" METHOD="POST" ACTION="file:///c:/1.private/pages/tables.html">
<FIELDSET>
<P>Search by:<BR>
<INPUT TYPE="RADIO" NAME="searchtype" VALUE="customer" CHECKED>Customer <BR>
<INPUT TYPE="RADIO" NAME="searchtype" VALUE="contact">Contact <BR>
</P>
<P>
Enter name:
<INPUT TYPE="TEXT" NAME="criteria" VALUE="who">
</P>
<INPUT TYPE="SUBMIT">
</FIELDSET>
</FORM>
</BODY>
</HTML>
</html form>

P.S. This problem occurs when using Netscape 6.2. The applet works fine with IE 6.0.26. Other than "use ie" does anyone have any suggestions?

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