如何在dw中实现，当鼠标移到网页的某个地方时，鼠标右下角会出现提示框，也就是说明文字
可以给图片添加热点,然后切换到代码视图,在<map></map>标签当中的这个:<area
shape="rect"
coords="87,40,131,76"
href="#">
这表示一个热点,在这里添加一个alt属性就可以了
<area
shape="rect"
coords="87,40,131,76"
href="#"
alt="你需要的说明文字">
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