'nohref' indicates that the 'area' in the 'map' has no link
<HTML>
<head><Title>Example For</Title></head>
<BODY>
<img src="http://www.java2s.com/style/logo.png"
alt="http://www.java2s.com"
width=300
height=100
usemap="#myMap">
<map name="myMap">
<area shape="rect" coords="0, 0, 100, 50" nohref="true" onClick="alert('not activeregion')">
<area shape="rect" coords="100, 0, 200, 50" nohref="true" onClick="alert('notactive region')">
<area shape="rect" coords="200, 0, 300, 50" href="http://www.java2s.com" >
<area shape="rect" coords="0, 50, 100, 100" href="http://www.java2s.com" alt="">
<area shape="rect" coords="100, 50, 200, 100" href="http://www.yahoo.com" alt="TheYahoo home page">
<area shape="rect" coords="200, 50, 300, 100" href="http://www.java2s.com">
</map>
</BODY>
</HTML>
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