Icon / graphic links in header bar

Is is possible to create and place graphics into the header bar so you can click on a graphic instead of just text link. I'm thinking I would like tabs on the header bar as seen on most browsers now.
Any help or push in the right direction would be most welcome.
Steve - From a land down under

Is is possible to create and place graphics into the header bar so you can click on a graphic instead of just text link. I'm thinking I would like tabs on the header bar as seen on most browsers now.
Google for "image map"

Does anybody have any example code so I can see how to do it within zen cart or is there a mod that will do it.
If I can find one example then I could follow on but I am not very good at code yet so learning as I go.
Steve