图片锚点模板
<img src="/i/eg_planets.jpg" border="0" usemap="#planetmap" alt="Planets" />
<map name="planetmap" id="planetmap">
<area shape="circle" coords="180,139,14"
href ="/example/html/venus.html" target ="_blank" alt="Venus" />
<area shape="circle" coords="129,161,10"
href ="/example/html/mercur.html" target ="_blank" alt="Mercury" />
<area shape="rect" coords="0,0,110,260"
href ="/example/html/sun.html" target ="_blank" alt="Sun" />
</map>