change behavior

Hi all, I've got myself stuck and I know there's an easy answer I'm
missing. I apologize for what's probably a newbie question, but I can't make
this work. I'm in MX 6.0 and would like to have a cell with an image as the
background. I'd like to put text links '1 2 3 4 5' in the cell and make it so
that clicking each number will load a different background image into the cell.
How do I do this? Can I name the image in the table background so it shows in
the list when I go to behaviors->swap image or is that not the right behavior?
Ideally I'd like to just do this in DW without extensions. thanks Mark