Ja .. princippet ligger i det her script
<body onload=\"dynAnimation()\">
<map name=\"FPMap0\">
<area href=\"C.htm\" shape=\"rect\" coords=\"23, 179, 193, 203\" onMouseover=\"fpAnimswapImgFP1.src=\'
http://www.google.com/intl/da/images/home_title.gif\';\"><area href=\"K.htm\" shape=\"rect\" coords=\"212, 180, 264, 202\" onMouseover=\"fpAnimswapImgFP1.src=\'
http://us.a1.yimg.com/us.yimg.com/i/ww/m5v5.gif\';\"><area href=\"D.htm\" shape=\"rect\" coords=\"289, 178, 395, 202\">
<area href=\"G.htm\" shape=\"rect\" coords=\"425, 179, 491, 203\">
<area href=\"L.htm\" shape=\"rect\" coords=\"519, 181, 586, 201\">
<area href=\"Ga.htm\" shape=\"rect\" coords=\"618, 181, 721, 203\"></map>
<img border=\"0\" src=\"
http://www.jubii.dk/i/l.gif\" usemap=\"#FPMap0\"
id=\"fpAnimswapImgFP1\" name=\"fpAnimswapImgFP1\"
dynamicanimation=\"fpAnimswapImgFP1\" lowsrc=\"\"
width=\"734\" height=\"217\">