返回图像中的区域地图标题 - 在线编辑器

          <img src="/examples/planets.gif" width="145" height="126" alt="Planets" usemap="#planetmap" />
<map name="planetmap">
<area id="venus" shape="circle" coords ="124,58,8" title="Venus" href ="venus.htm"  />
</map>
<p>金星区域的标题 (鼠标经过金星):
  <script>
    var x = document.getElementById('venus');
    document.write(x.title);
  </script>
</p>
        