forma libre
<area shape="poly" alt="Norway" title="Norway" coords="208,307,171,294,176,206,240,145,244,87,283,19,348,-1,408,1,405,43,391,43,393,34,377,21,366,33,367,55,362,65,354,58,346,64,331,51,324,62,320,79,308,69,307,86,301,84,293,97,296,106,282,129,274,162,277,168,276,175,268,175,258,194,263,226,272,236,264,242,267,254,266,264,260,267,261,287,249,282,247,307,231,310" href="../images/gallery3.jpg" onclick="return hs.expand(this)" />

cuadrado
<area shape="rect" alt="Iceland" title="Iceland" coords="1,43,110,135" href="../images/gallery2.jpg" onclick="return hs.expand(this)" />

circulo
<area shape="circle" alt="Denmark" title="Denmark" coords="239,352,36" href="../images/gallery1.jpg" onclick="return hs.expand(this)" />