2.2.38 [HTML] Section 17.5, The BUTTON element

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C0033:

The specification states:

 Visual user agents may render BUTTON buttons with relief and an up/down motion when 
 clicked, while they may render INPUT buttons as "flat" images.

All Document Modes (All Versions)

IMAGE and BUTTON elements are rendered identically, with relief as well as up and down motions.

C0034:

The specification states:

 It is illegal to associate an image map with an IMG that appears as the contents of 
 a BUTTON element.

All Document Modes (All Versions)

When an image is a child element of a button and defines an image map, the image map is rendered outside the visual boundaries of the button element. When the image map is clicked in this scenario, the onclick event associated with the button is executed in lieu of the onclick event behavior associated with the image map.