<div style="position: absolute; width: 100px; height: 100px; z-index: 1;
visibility: hidden" id="layer1">
This is the Pastor of Highlands Church - Mark Hornby.</div>
Here is coding I used to do what you wanted to do. It is used on
highlandspresbyterian.org with our pastors picture on the index page.
<p align="center">
<b >
<map name="FPMap18">
<area href="javascript:none" shape="circle" coords="187, 96,
96" onmouseout="FP_changePropRestore()"
onmouseover="FP_changeProp(/*id*/'layer1',1,'style.visibility','visible')">
</map>
<img border="0" src="images/UsedinProgram/Home/index.1.jpg"
width="340" height="248" usemap="#FPMap18"></b></p>