<img src="/upload2/statics/images/course/planets.gif" width="145" height="126" usemap="#planetmap"> <map name="planetmap"> <area id="venus" shape="circle" coords="124,58,8" alt="Venus" href="venus.htm#description"> </map> <p>金星href属性的锚: <script> document.write(document.getElementById("venus").hash); </script> </p>