Why won't my HTML page display my applet?

Question

I can't figure this out. It works fine through Sun's appletviewer. Here is my HTML code:
<applet code="backGroundSwing.class" height=200 width=500></applet>
Here is my applet code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
//<applet code="backGroundSwing.class" height=500 width=500></applet>
public class backGroundSwing extends JApplet{
     sprite pane;
     JButton red = new JButton("Red");
     JButton green = new JButton("Green");
     JButton blue = new JButton("Blue");
     JButton cyan = new JButton("Cyan");
     JButton yellow = new JButton("Yellow");
     JButton orange = new JButton("Orange");
     public void init(){
          Container contentPane = getContentPane();
          pane = new sprite();
          contentPane.add(pane);
          pane.add(red);
          pane.add(green);
          pane.add(blue);
          pane.add(cyan);
          pane.add(yellow);
          pane.add(orange);
          red.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.red);
          green.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.green);
          blue.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.blue);
          cyan.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.cyan);
          yellow.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.yellow);
          orange.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.orange);
     class sprite extends JPanel{
          sprite(){

Answer 1

No, all the other applets use AWT. I think I have the plug in. At least, on my control panel, I have an icon that says:
java 1.3.1 plug in.
Is there a way that people with out any java software installed on there computer except a java enable browser view my swing applets?
Here is my source code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
//<applet code="backGroundSwing.class" height=500 width=500></applet>
public class backGroundSwing extends JApplet{
     sprite pane;
     JButton red = new JButton("Red");
     JButton green = new JButton("Green");
     JButton blue = new JButton("Blue");
     JButton cyan = new JButton("Cyan");
     JButton yellow = new JButton("Yellow");
     JButton orange = new JButton("Orange");
     public void init(){
          Container contentPane = getContentPane();
          pane = new sprite();
          contentPane.add(pane);
          pane.add(red);
          pane.add(green);
          pane.add(blue);
          pane.add(cyan);
          pane.add(yellow);
          pane.add(orange);
          red.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.red);
          green.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.green);
          blue.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.blue);
          cyan.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.cyan);
          yellow.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.yellow);
          orange.addActionListener(new ActionListener(){
               public void actionPerformed(ActionEvent event){
                    pane.setBackground(Color.orange);
     class sprite extends JPanel{
          sprite(){