hi Adrian,
I am writing to you as I am concerned by a decision made by the IE team not
to support the aria-labelledby and aria-descibedby attributes in IE9
These attributes are particularly important to accessibility in web based
applications for associating text labels and descriptions to controls.
I posted a bug
https://connect.microsoft.com/IE/feedback/details/555280/ie-platform-preview-does-not-support-multiple-values-in-aria-labelledby-and-does-not-support-aria-describedby
it
has been marked as won't fix.
I also provided deatiled test cases and results:
http://www.paciellogroup.com/blog/aria-tests/aria-labelledby-input.html
I am unsure of how to pursue this further and although you may not be the
right person to ask, you may know who is?
regards
Steve Faulkner