Sent by Zoe M. Gillenwater on 18 January 2006 21:09
Derek Featherstone wrote:
>On 1/12/06, Ian Anderson wrote:
>
>
>
>>On no account put the skip link on a single pixel image with alt text,
>>as was common practice a couple years ago. This is because at least
>>one screen reader (JAWS, the most common one) will not read the link
>>because it does not read alt text on any image smaller than 10px by
>>10px.
>>
>>
>
>Ian - do you have a reference or test cases for this? I've never heard
>this, to be honest, so I'm very curious...
>
>
Sorry this is late in coming -- very behind on my list mail, as you can see.
From our own Bob Easton's tests, it appears that JAWS 4 does not read
alt text on 1 x 1 images (test case 5) but does on a 10 x 1 image (test
case 6):
http://www.access-matters.com/screen-reader-test-results/
I can't say whether JAWS 4 is relevant to cater to or not. I do know
that JAWS is very expensive, so I would guess that many of its users are
not fast to upgrade.
I personally try to just keep the text "skip to main content" on the
screen for the benefit of all users, and if I must hide it, I use an
off-left technique. More information here:
http://www.communitymx.com/abstract.cfm?cid=B96B1
http://www.communitymx.com/abstract.cfm?cid=BAF61
Zoe
--
Zoe M. Gillenwater
Design Services Manager
UNC Highway Safety Research Center
http://www.hsrc.unc.edu
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