Right now it's looking for: getElementById("cowToggle"
). I can't find anyhting with the id CowToggle; and in any event all I want to do upon rollover is swap out the default background image in "header1B" (http://www.discretedata.com/Phase3/images/headers/Header_BrownCowDown.jpg
) with this image (http://www.discretedata.com/Phase3/images/headers/Header_BrownCowOver.jpg
I never quite got it when I was asking this question 3 months ago, and now the project has come back.
Not that you can't find it yourself, but here's the CSS: http://www.discretedata.com/Phase3/styles/global_07.08.css