to the best of my knowledge, that cannot be done within front page. You can however use this piece of code to do it:
<A HREF="#" onMouseOver="window.status='01/03/03: san05 (opens popup window)';return true" onMouseOut="window.status='';return true" onClick="window.open('yoururl.html',width=468,height=311,directories=no,location=no,menubar=no,scrollbars=no,status=no,toolbar=no,resizable=no,left=0,top=0,screenx=50,screeny=50');return false">
just replace the width and heigh with the dimensions of your actual photo, and the screenx, screeny, is where on the users screen you want to see the pop up. (i.e. the window position, top, bottom, middle… etc;)
