Connect 4

Playing Instructions: You play against the computer. You place red disks, the computer places the green disks. The aim is to be the first to place four disks in a row. Horizontal, vertical, and diagonal lines are valid. Use your mouse to position a disk at the top of the column where you want a disk to go. The program does not use a perfect strategy - so it is possible for you to win.
HTML Source:
<applet code="Connect4.class" align="baseline" width="292" height="322"></applet>
Author:  Sven Wiebus (http://www.castrop-rauxel.netsurf.de/homepages/sven.wiebus/)