title: Display a .mp4 video on a web site in compatibility with HTML 4.01 strict
body: <p>The solution has to be accepted with neither errors nor warnings by <a href="http://validator.w3.org/check" rel="nofollow">W3C validator</a>, therefore the "video" tag known from HTML5 is obviously incorrect. Movie is placed in file at the same directory as web site.    </p>