public void mousePressed(MouseEvent e)
   {
       Rectangle r1 = pucks.elementAt(13).rectangle;
       if(r1.contains(new Point(e.getX(), e.getY()))){
             offsetX = e.getX() - r1.x;
             offsetY = e.getY() - r1.y;
             dragging = true;
       }
   }

   public void mouseReleased(MouseEvent e)
   {
           dragging = false;
   }

   public void mouseDragged(MouseEvent e)
   {
       if(dragging){
           int newY = e.getY() - offsetY;

           pucks.elementAt(13).slide(newY);
           repaint();
       }
   }

   public void mouseClicked(MouseEvent e){}
   public void mouseEntered(MouseEvent e){}
   public void mouseExited(MouseEvent e){}
   public void mouseMoved(MouseEvent e){}
}