No, it is not possible with "standard" classes. It is possible, however, to
create your own User Control or Server Control that looks and behaves like a
Combo Box with images in it. You would superimpose a number of Divs (Panels)
over a combo box, and write JavaScript or Server Side vent handlers that
respond to the Combo Box events, repositioning the panels. This would not be
an easy task, however.