W3C home > Mailing lists > Public > public-html@w3.org > February 2010

Re: Alternate proposal for ISSUE-30 longdesc

From: Philip Taylor <pjt47@cam.ac.uk>
Date: Mon, 22 Feb 2010 15:00:34 +0000
Message-ID: <4B829C12.4000405@cam.ac.uk>
To: Maciej Stachowiak <mjs@apple.com>
CC: Charles McCathieNevile <chaals@opera.com>, Jonas Sicking <jonas@sicking.cc>, HTMLwg WG <public-html@w3.org>
Maciej Stachowiak wrote:
> Will current assistive technologies correctly handle a longdesc value 
> that is just a reference to a fragment on the existing page? Is it 
> actually used that way in content? (I don't recall any examples of this 
> being cited in any of the surveys done.)

Sometimes but not frequently, according to some subset of public web 
pages. The ~425K pages from 
<http://philip.html5.org/data/dotbot-20090424.txt> have longdescs 
indicated in <http://philip.html5.org/data/longdesc-raw.txt>:

8 pages have longdesc="#".

and some other pages from the same site have:

   <a name="top"></a>
   <div ...><div ...>
     <a href="..."><img 
src="/zentral/images/image_header/logo_austriantrade.gif" width="212" 
height="32" title="advantageaustria.org - Home &copy; ADVANTAGE AUSTRIA" 
alt="advantageaustria.org - Home &copy; ADVANTAGE AUSTRIA" 
longdesc="#top" /></a>

(no content between the top and the img).

http://mit.edu/7.01x/7.013/study.html has

   <a href="#top"><img src="comm_images/b_backtotop.gif" alt="back to 
top" width="111" height="21" border="0" longdesc="#top" /></a>

(at the bottom of the page, pointing to the top).

http://www.konyhatizezercikk.hu/ has

   <a href="#oldalteto"><img src="../images/oldalteto.jpg" alt="Vissza 
az oldal tetejÚre" width="30" height="30" border="0" 
longdesc="#oldalteto" /></a>

and oldalteto is never defined anywhere.

http://www.everythingdsl.com/time-warner/wisconsin/madison/ has

   <img src="madison-time-warner-promo.png" alt="Madison Time-warner 
promo" longdesc="#PromoDesc" /><div id="PromoDesc">Get Madison 
Time-warner offers in a matter of seconds</div>

Philip Taylor
Received on Monday, 22 February 2010 15:01:06 UTC

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