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RE: Display: none

From: Jon Gunderson <jongund@uiuc.edu>
Date: Thu, 16 Mar 2006 08:31:51 -0600
To: Jim Tobias <tobias@inclusive.com>, "'Andrew Kirkpatrick'" <akirkpat@adobe.com>, w3c-wai-ig@w3.org
Message-Id: <82325f74.99f2213d.8266500@expms1.cites.uiuc.edu>

Jim and Andrew,
"display:none" will also hide the h1 from screen readers.  A
better approach is to use absolute positioning on the h1, so
screen readers will still read the h1 content.

h1 {
  position: absolute;
  left: -200em;
  top: -20em;
}

The use of absolute positioning takes the h1 out of normal
rendering order and by placing in a location off the rendered
screen it serves the same function as "display: none" but
leaves the h1 visible to screen readers.

Jon


---- Original message ----
>Date: Thu, 16 Mar 2006 09:22:06 -0500
>From: "Jim Tobias" <tobias@inclusive.com>  
>Subject: RE: Display: none  
>To: "'Andrew Kirkpatrick'" <akirkpat@adobe.com>,
<w3c-wai-ig@w3.org>
>
>   Andrew -- this is so great.  It's really a model for
>   how detailed web access issues should be explored
>   and documented.  Thanks.
>    
>
>   ***********
>   Jim Tobias
>   Inclusive Technologies
>   tobias@inclusive.com
>   +732.441.0831 v/tty
>   www.inclusive.com
>
>    
>
>     ------------------------------------------------
>
>     From: w3c-wai-ig-request@w3.org
>     [mailto:w3c-wai-ig-request@w3.org] On Behalf Of
>     Andrew Kirkpatrick
>     Sent: Tuesday, March 14, 2006 1:06 PM
>     To: w3c-wai-ig@w3.org
>     Subject: RE: Display: none
>     my data on this topic:
>     http://www.webaccessibility.info/lab/displaytest.html
>      
>     AWK
>
>     ------------------------------------------------
>
>       From: w3c-wai-ig-request@w3.org
>       [mailto:w3c-wai-ig-request@w3.org] On Behalf Of
>       Mike Costello
>       Sent: Tuesday, March 14, 2006 12:58 PM
>       To: w3c-wai-ig@w3.org
>       Subject: Display: none
>       Hello,
>        
>       I was just wondering what peoples thoughts were
>       on the use of the css property "display: none"
>       to provide content to screen readers that's
>       hidden from visual browsers.
>        
>       The context that I was planning to use this, was
>       to hide h1 text titles from visual browsers by
>       using the display: none property to hide
>       them and replacing them with graphical titles
>       displayed using the css background property.
>        
>       So for example;
>        
>       HTML
>        
>       <h1><span class="hidethis">This is my
>       title</span></h1>   
>        
>       CSS
>        
>       h1 {
>           background:
>       url("images/this_is_my_title.gif");
>           width: 150px;
>           height: 20px;
>       }
>        
>       .hidethis {
>           display: none;
>       }
>        
>       My belief is that this would render the
>       graphical image of the title in visual browsers
>       like Internet Explorer etc. and the text
>       h1 title in screen readers and browsers with CSS
>       turned off. I'm I correct in making this
>       assumption? What are people's opinion on this
>       methodology?
>        
>       Many thanks in advance of any help anyone can
>       offer,
>        
>       Mike
>
>       Kind regards.
>
>       --
>
>       Mike Costello
>       Senior Developer
>
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Jon Gunderson, Ph.D.
Director of IT Accessibility Services
Campus Information Technologies and Educational Services (CITES)
and 
Coordinator of Assistive Communication and Information Technology
Disability Resources and Education Services (DRES)

Voice: (217) 244-5870
Fax: (217) 333-0248
Cell: (217) 714-6313

E-mail: jongund@uiuc.edu

WWW: http://cita.rehab.uiuc.edu/
WWW: https://netfiles.uiuc.edu/jongund/www/
Received on Thursday, 16 March 2006 14:32:06 GMT

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