[Zope] Images and tag tag

I use the nifty Image object and an extra tag to it. like this <dtml-var "myimage_gif.tag(border=0)"> But what I want to do is this: <IMG ONMOUSEOVER="this.style.cursor = 'HAND'" ONMOUSEUP="document.bgColor='#FFCCFF'" SRC="myimage_gif" width=118 height=77 border=0> I have tried <dtml-var "myimage_gif.tag(border=0, onmouseover=blablabla"> This is not supported the tag tag. Only border, width, height and alt can be used. Solutions? Ideas?