Help diagnosing why Javascript is not working with WordPress

I created a WordPress website with various plugins (twitter feed, share this, facebook like, wp-polls and google maps).
http://visualrain.com/azk12mobile2011

I’m now trying to add a message or image that displays using this code:
(from http://www.dynamicdrive.com/dynamicindex4/flyimage2.htm)

[Code moderated as per the Forum Rules. Please use the pastebin]

Any thoughts about why this isn’t working would be greatly appreciated.
Thanks.