You are the red circle.  The ghosts are, in order, blue, cyan, orange, and black.  The fruit, when it appears, is green.  When you click on the board, you will move as far as possible towards the location you clicked.  Your score is shown in the upper left corner.
<applet archive="PacMan.jar" code="PacMan.class" width="1020" height="1020"></applet>