51help TIY
码：
<html> <head> <script type="text/javascript"> function changeLink() { document.getElementById('venus').href="http://www.51help.tk/index.htm/ } </script> </head> <body> <p>（Venus）：</p> <img src="../i/eg_planets.jpg" tppabs="http://www.51help.tk/i/eg_planets.jpg" usemap="#planetmap" /> <map name="planetmap"> <area id="venus" shape="circle" coords="180,139,14" href ="../example/html/venus.html" tppabs="http://www.51help.tk/example/html/venus.html" alt="Venus" /> </map> <input type="button" onclick="changeLink()" value="改变链接" /> </body> </html>
查看结果: