JavaScript CSS Clipping Help

I'm trying to implement a "Low Bandwidth Rollover" script as described at:
http://www.webreference.com/dhtml/column2/

I've complete the script and traversed the tutorial several times, but its
still not working.  If possible can someone take a look.

The page is at:
http://cyberangler.com/test4.html

The script is linked, but can be seen at:
http://cyberangler.com/mainmenu.txt

Any help would be appreciated.  TIA

Warmest regards,

Rudy Gomez                   \      ,,,,,,\\,,              ...><`>
rudy(at)cyberangler.com    }><(((((())))�� ...><`>
http://cyberangler.com/    /      `````//''             ...><`>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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