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About test 13 (client side image-maps)

From: Vicente Luque Centeno <vlc@it.uc3m.es>
Date: Wed, 15 Jun 2005 17:37:40 +0200 (CEST)
To: w3c-wai-gl@w3.org
Message-ID: <Pine.LNX.4.61.0506151734240.30968@violin.it.uc3m.es>

Hi,

Trying to formalize rule 13 at
http://www.w3.org/WAI/GL/WCAG20/tests/test13.html (All links in all
client side image-maps are duplicated within the content), I found that:

* It could be formalized with the following XQuery expression:
//area[let $href:= self::area/@href return count(//a[@href = $href]) = 0] 
= ()

(which says that every area must have a redundant link somewhere else in
the document with the same href attribute; otherwise there is an error.)

* However http://www.w3.org/TR/WCAG20-HTML-TECHS/#csim_textlinks is
deprecated.

* I don't think it is necessary. //area[not(@alt)] = () should be enough.

So, this is confusing.

Comments?

Vicente Luque Centeno
Dep. Ingeniería Telemática
Universidad Carlos III de Madrid
http://www.it.uc3m.es/vlc
Received on Wednesday, 15 June 2005 15:37:50 UTC

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