Okay, here's an important feature request that I have, either for someone to code as a stylesheet or (assuming no browser supports the necessary level of CSS that'd be required) a Firefox extension:
Please play back the Windows "tada.wav" sound file whenever I'm viewing a page on the W3.org site and either valid-xhtml11 or valid-xhtml10 image is displayed.
I'm thinking something like
.inline-badge {
play-during: url("tada.wav") mix !important;
volume: x-loud;
}
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No browser will support CSS to play back sound. Page the extension authors. (I'm not one.)
Besides, it happens so rarely that you'd never use it. =-)
And when a page fails validation, it should play the old Macintosh Noise of Death(tm) that used to notify one at startup that the computer was seriously boned!
Anil doesn't make it explicit in his post, but the CSS pseudocode above has some foundation in reality. W3C has published a spec for aural style sheets, and Anil's code is at least close to how it would look, if implemented.
Bill Mason says that "no browser" supports it, but there is at least one browser that does: Emacspeak.
Now, this doesn't solve Anil's desire for Mozilla to play the sound, but it gives extension writers something to work with.