Applet Won't Receive Focus...Help!

Hello, I am trying to program a Tetris applet, but for some reason I can't move the piece. The arrow keys move and rotate the piece and the space bar drops the piece. The code is too large to fit in a post, but I am including links so that you can see what I'm working with. The actual applet is at http://www.danielbakerdesigns.com/tetris/tetris.htm. There are five Java classes at http://www.danielbakerdesigns.com/tetris/Area.java, http://www.danielbakerdesigns.com/tetris/Board.java, http://www.danielbakerdesigns.com/tetris/Piece.java, http://www.danielbakerdesigns.com/tetris/Tetris.java, and http://www.danielbakerdesigns.com/tetris/Unit.java. Only the Area and Tetris classes are relevant to receiving key events (at least that I'm aware of).
Could somebody please tell me why I can't move my pieces? I've tried everything I can think of (which probably means I am just majorly brain-farting someplace), but nothing seems to work.
Thank you so much for your help!

You dont have the error because there may be such class in your local class path.
To solve this, you have to store the class file in correct directories.
In the directory of storing tetris.htm, please create a directory com
You should create directory like this
com/sun/j3d/utils/timercom contain directory called sun. sun contain a directory called utils...
Store J3DTimer in the directory of timer

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Click the “Kudos Thumbs Up" at the bottom of this post to say
“Thanks” for helping!
Click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution!

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