​x
 
<html>
<body>
​
<img id="planets"
src="/i/eg_planets.jpg" 
usemap="#planetmap" />
​
<map name="planetmap">
<area shape="circle"
coords="180,139,14"
href ="/example/html/venus.html"
target ="_blank"
alt="Venus" />
</map>
​
<p>该图像是服务器端图像映射吗？
<script type="text/javascript">
x=document.getElementById('planets');
document.write(x.isMap);
</script>
</p>
​
</body>
</html>
​