The ImageMap is stored in a layer below the picture and contains information about the referenced regions. The only disadvantage of Client Side ImageMaps is that older Web browsers cannot read them; a disadvantage that will, however, resolve itself in time.
的外观显示出来。图像映射存储在图像的下一层，并包含已引用区域的信息。客户端图像映射唯一的缺点是，早期的 Web 浏览器不能对其进行读取。不过这个问题将会自行解决。