How about a clientside image map, along the lines of:
<MAP NAME="perlmonks">
   <AREA SHAPE="rect" COORDS="0,0,15,100" HREF="http://www.perlmonks.com">
   <AREA SHAPE="rect" COORDS="15,0,30,100" HREF="http://perlmonks.com">
   <AREA SHAPE="rect" COORDS="30,0,45,100" HREF="http://www.perlmonks.net">
   <AREA SHAPE="rect" COORDS="45,0,50,100" HREF="http://perlmonks.net">
   <AREA SHAPE="rect" COORDS="50,0,65,100" HREF="http://www.perlmonks.org">
   <AREA SHAPE="rect" COORDS="65,0,70,100" HREF="http://perlmonks.org">
</MAP>
<IMG SRC="colorperlmonkssm.gif" USEMAP="#perlmonks">