Shall transparent areas in APO react on clicks?

I want to use an Active Picture Object and a .png image where the transparent area doesn't react to clicks. But somehow I'm not able to get it to work and I'm sure I've had it working before. Help! <img src="/center/images/graemlins/crazy.gif" alt="" />

Example file here (52Kb zipped)

You have to include the .png file as well, otherwise we can't open it!

Ooops, sorry. Thanks for pointing it out.
Have added the image now. Same link.