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Re: [agenda] Agenda for tomorrow's call

From: Bruce Lawson <brucel@opera.com>
Date: Wed, 20 May 2009 07:10:31 +0100
To: achuter@technosite.es, "MWI BPWG Public" <public-bpwg@w3.org>
Cc: "Appelquist, Daniel, VF-Group" <Daniel.Appelquist@vodafone.com>
Message-ID: <op.ut7srtq0h8on37@bruce-pc>
On Tue, 19 May 2009 15:24:11 +0100, Alan Chuter <achuter@technosite.es>  
wrote:

> Jo Rabin wrote:
>> A question on sprites: what happens to our bp1 stuff on alt text etc.  
>> (and what about accessibility aspects).
>
> As CSS is necessary for the use of sprites, they should only be used for  
> decorative images, which by definition do not require a text  
> alternative. If an image does require a text alternative then it isn't  
> decorative and shouldn't be done with CSS, so it shouldn't be a sprite  
> either. So icons or buttons shouldn't be made into sprites if they are  
> the sole way of conveying information. I think that this should perhaps  
> be made clear in the BP document [1].

We could point to WCAG 2; the "Techniques for WCAG 2" document says "Using  
CSS to include decorative images":

The objective of this technique is to provide a mechanism to add purely  
decorative images and images used for visual formatting to Web content  
without requiring additional markup within the content. This makes it  
possible for assistive technologies to ignore the non-text content. Some  
user agents can ignore or turn off CSS at the user's request, so that  
background images included with CSS simply "disappear" and do not  
interfere with display settings such as enlarged fonts or high contrast  
settings.

http://www.w3.org/TR/WCAG20-TECHS/C9.html

Hugs,

Bruce
Received on Wednesday, 20 May 2009 06:11:32 UTC

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