Quick applet question!!

[fezman1337]

I have to make a racing game type applet where I import 2 pictures of a red and white car. Then when a go button is hit up top in the middle the 2 cars start inching their way to the right and then stops after a set amount of pixels. Using an example of a similar program using circles, I was able to write out most of the code and here is what I have so far:

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class Race extends JApplet implements Runnable, ActionListener{
	private int pos1=0, pos2=0;
	private Graphics buffer;
	private Image offScreen;
	private Thread runner;
	private JButton go;
	private ImageIcon [] img = new ImageIcon[2];

	public void init() {
		setLayout(new FlowLayout());
		setBackground(Color.yellow);
		go = new JButton("Go");
		go.addActionListener(this);
		add(go);
		offScreen = createImage(getSize().width, getSize().height);
		buffer = offScreen.getGraphics();
		img[0] = new ImageIcon("whiteCar.gif");
		img[1] = new ImageIcon("redCar.gif");

	}

	public int moveInc(){
		return (int)Math.floor(5 * Math.random());
	}

	public void paint(Graphics g) {

		img[0].paintIcon(this, g, pos1, 100);
		img[1].paintIcon(this, g, pos2, 200);

		if(pos1 > 300) {
			pos1 = 301;
			runner=null;
		}if(pos2 > 300){
			pos2 = 301;
			runner=null;
		}
		g.drawImage(offScreen,0,0,this);
	}
		public void run() {
			while(pos1 <= 300 && pos2 <= 300) {
				pos1 = pos1 + moveInc();
				pos2 = pos2 + moveInc();
				try{
					runner.sleep(15);
				}catch(InterruptedException ie){}
				repaint();
			}
		}

		public void actionPerformed(ActionEvent ae) {
			pos1=pos2=0;
			if(runner == null) {
				runner = new Thread(this);
				runner.start();
			}

	}
	public void update(Graphics g) {
		paint(g);
	}
}

I had the pictures showing up before but after I continued to add the code it is a blank yellow screen. Here is what the applet should look like (teacher hosted website) : http://www.brandensimbeck.com/School...ek13/Race.html

Thanks in advance for any help!!!!

[Eranga]

Please use code tags when you are posting again. Unformated codes are really hard to read.