How to create rollover text on an image

Question

I'm a non-coder I'm using Dreamweaver CS4 to create a personal website.  I know next to nothing about CSS, but I think I understand how to create a style and apply it to elements. 
My website has several image galleries, and what I'd like to be able to do is create a rollover text box of some kind that floats up in a fixed position when mouseover on an image.  What I'm looking to do is basically what this website does on their top header image:
AstroBin | AstroBin
I've experimented some with spry tooltips but I want the text box to be in the same position and not wherever the mouse is pointing at the time.  I have done hours of searching and I cannot come up with a solution to this (at least not one that I understand) and it's quite possible that I don't even know the terms to search for. 
What tools or terms am I describing here?  What should I be searching for? 
Can anyone point me to a good tutorial to do what I'm asking?  Please give me the dummy version!
Thanks in advance.

Answer 1

import java.awt.*;
import java.awt.image.*;
import javax.swing.*;
public class fireleaf extends JFrame {
  public fireleaf() {
    JLabel label = new ImageLabel();
    JPanel panel = new JPanel();
    panel.setBackground(Color.pink);
    panel.add(label);
    getContentPane().add(panel, "Center");
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setSize(300,200);
    setLocation(300,200);
    setVisible(true);
  private class ImageLabel extends JLabel {
  // image from:
  // http://java.sun.com/docs/books/tutorial/uiswing/painting/imageSequence.html
    public ImageLabel() {
      Toolkit toolkit = Toolkit.getDefaultToolkit();
      Image image = toolkit.getImage("images\\T4.gif");
      ImageIcon icon = new ImageIcon(image);
      setIcon(icon);
      setOpaque(true);
    public void paintComponent(Graphics g) {
      super.paintComponent(g);
      Graphics2D g2 = (Graphics2D)g;
      g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                          RenderingHints.VALUE_ANTIALIAS_ON);
      g2.drawString("hello", 10, 10);
  public static void main(String[] args) {
    new fireleaf();
}