[Zope] How to do a mouse over in Zope

I'm trying to get a mouse over to work and all I get is the text. This is what I'm trying to make work: <a href="feedback.html" onMouseOver="document.the_image.src=<dtml-var "images['feedback_dn.gif']">;" onMouseOut="document.the_image.src=<dtml-var "images['feedback_up.gif']">;"> <img src=<dtml-var "images['feedback_up.gif']"> name="the_image" border="0"></a> What am I doing wrong?  Talk to you soon,   Gord