Javascript help needed

I’m trying to implement the ‘rollover highlights’ trick demonstrated here:
http://builder.cnet.com/webbuilding/0-7690-8-7819976-1.html

one my own page here:
http://www.arches.uga.edu/~jennat/cheapdate/port.html

I’ve faithfully copied and pasted the code like a good Javascript thief, and for some reason it refuses to work for me. Any ideas?

Thanks, Jenna