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data table question

From: Dona Patrick <patrickd@calib.com>
Date: Thu, 17 May 2001 12:41:15 -0400
Message-ID: <A9F731683FD6D111A0D100A0C99E02A003E9D5FE@exchange.calib.com>
To: WAI Interest Group <w3c-wai-ig@w3.org>
We have a number of data tables on a file that we are converting to an html
document that use shading to indicate information.  For instance the shaded
rows mean the information contained in those rows is optional (for a task).
We have brainstormed as to how to impart that information without making the
html version look different from the original version.  As part of our
brainstorming, the html coder wondered how a typical blind user would
approach a properly marked up data table on a web page.  Would he or she
read it line by line?  Cell by cell?  

Any ideas of how to convey the information about the shaded cells to a
visitor using a screen reader?  One idea we came up with was to put an
invisible GIF with alt text giving the information, but would this need to
be done in each cell or would it be ok just at the beginning of the row?

Thank you,

Dona Patrick
Received on Thursday, 17 May 2001 12:41:21 GMT

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