W3C validator complains about the lack of id attribute for <map> and alt attribute for <area> (see URL above).
Version: unspecified
Severity: normal
URL: http://validator.w3.org/check?verbose=1&uri=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FTemplate%3ATimeline_of_compact_Macintosh_models