- From: Christophe Strobbe <christophe.strobbe@esat.kuleuven.be>
- Date: Mon, 19 Feb 2007 16:16:21 +0100
- To: WCAG <w3c-wai-gl@w3.org>
Hi, During a review of test cases in the BenToWeb test suite for WCAG 2.0, the following occurred to me: SC 2.4.6 requires that "When a Web unit or authored component is navigated sequentially, components receive focus in an order that follows relationships and sequences in the content." However, there are many types of content that can be tabbed through both in "normal" order (usually top to bottom, just pressing the TAB key) and in reverse order (pressing SHIFT + TAB). It is possible for scripts to manipulate the focus in such a way that certain items are skipped in normal tabbing order but not in reverse tabbing order. This would fail the intent of SC 2.4.6 but this is not made explicit anywhere. An example of this behaviour can be seen at <http://www.bentoweb.org/ts/XHTML1_TestSuite2/testfiles/sc3.2.5_l3_027.html>. When tabbing through this file, focus goes from the first to the third link (the second links is skipped because an 'onblur' event on the first link changes focus to the third link). When tabbing in reverse order, however, you get all the links. Best regards, Christophe -- Christophe Strobbe K.U.Leuven - Departement of Electrical Engineering - Research Group on Document Architectures Kasteelpark Arenberg 10 - 3001 Leuven-Heverlee - BELGIUM tel: +32 16 32 85 51 http://www.docarch.be/ Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
Received on Monday, 19 February 2007 15:16:48 UTC