Follow up from Bug 565569 - nsGfxButtonControlFrame::CreateFrameFor should set primary frame for text content. In test_name.html: <span id="labelledby_mixed_input"> <input type="button" id="input_button" title="input button"/> <input type="submit" id="input_submit"/> <input type="reset" id="input_reset"/> <input type="image" id="input_image" title="input image"/> </span> <button id="btn_labelledby_mixed_input" aria-labelledby="labelledby_mixed_input">7</button> When computing the name of btn_labelledby_mixed_input, some reason we currently don't use the title attribute for: <input type="image" id="input_image" title="input image"/> When the primary frame is set for the text content (in bug 565569), we also seem to ignore input_button's title text. We should investigate precisely why, as well as consider fallbacks when the subtree text equiv is empty. There might be other work in this area as well.

dupe of bug 771141?