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Re: MAP navbars

From: Al Gilman <asgilman@access.digex.net>
Date: Sun, 15 Nov 1998 11:23:46 -0500 (EST)
Message-Id: <199811151623.LAA27919@access1.digex.net>
To: charlesn@srl.rmit.EDU.AU (Charles McCathieNevile)
Cc: nir@nirdagan.com, w3c-wai-gl@w3.org, w3c-wai-ua@w3.org
to follow up on what Charles McCathieNevile said:

> Nir, my question was not about how it should be done - it was clear that
> you had carefully read the spec, and you are quite right that it can be
> used trivially without an IMG or OBJECT.  (although if it is an inline
> then presumably it should go inside, rather than outside, the <P>.
> Actually it seems strange that it be an inline element at all.) My
> question was whether, in the case where it is used with an image, the
> content of A elements is rendered in the same way the the ALT value for
> AREA elements, which would make it a very useful way of doing things. It
> would address some of Gary's concerns about link redundancy, the concerns
> about having proper ALT text available, the concerns about backwards
> compatibility, and provide the ability to jump links at the beginning, all
> in one go. 

Assuming that the user has turned image display off, and that the
browser does indeed display the MAP contents as an ALTernative to
the image, how does the audio visitor skip the group of links?
Or in a legacy browser, how does the audio visitor having been
told that there are links at the foot of the page, move to the
head of that link group?

> (What I am suggesting here is that the Page Authoring Guideines suggest 
> that ALT text for an image map declare that the links are reproduced 
> below, by means of a MAP (as Nir suggested) and that in the UA 
> guidelines it require that content of A elements which are part of a MAP 
> be rendered as ALT text for the relevant regions. Thus settling all (I 
> think) the concerns which are raised by Client-side Image maps, asking 
> for less redundancy (which is a good thing) and providing a solution to 
> the problem originally raised which works now (unlike the other elegant 
> solutions we had thought of) and which is an elegant solution.

For a truly elegant solution what we are missing is the 
<pseudo-css:display="minimize"> ability for a client-side policy
to direct that the map image be replaced with a link to
where the MAP content is already occurring in the text flow.

   Linkname: Property index
        URL: http://www.w3.org/TR/REC-CSS2/propidx.html

   Linkname: 'display'
        URL: http://www.w3.org/TR/REC-CSS2/visuren.html#propdef-display

> 
> Charles McCathieNevile
> 
Received on Sunday, 15 November 1998 11:24:04 GMT

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