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http://www.accessify.com/features/tutorials/accessible-forms/#labelinfo

Testing  Website  

http://www.accessify.com/tools-and-wizards/accessibility-tools/favelets/quick-page-test/

While there are some excellent accessibility toolbars that you can add to your browser, and also numerous online validators that you can use, sometimes the wealth and breadth of the tools on offer can actually be a bit overwhelming.

The Quick Page Accessibility Tester (oh for a more catchy name!) is bookmarklet/favelet that you can click on at any time which will give you a quick analysis of any web page. It highlights definite issues with your page, warns about possible issues and also highlights areas on the page that might benefit from some ARIA enhancements.