11/16/03
* Fill in ball movement code
* Fill in paddle collision code
* Fill in paddle movement code
* Insert the menuBar code 
* make the dialog box code for about and settings

11/17/03 
* make aboutDialog function

11/18/03
* add player 2 keyboardListener
* Make atari-style scoreboard
* Make the field divider (tennis court net)
* Make the field say "Paused" when the mouse is out of the playPanel
* change the mouseMoved action listener to keyboardListener type 
  function
* make the game menuItem into a drop-down list with radio buttons for
  choosing ai or human player 2