I'd like to know how to hightlight my banners to show their locations on the page.

I can do it with my Joomla sites:

http://sitename.com

enter

http://sitename.com/index.php?tp=1

with show me my page with all the banners highlighted in red with the name of the banner location.

I'd like to be able to do the same with Zen Cart but can't figure it out.

Thanks