How to validate a page for Section 508 compliance
complying with accessibility standards using the Firefox browser or a free online service
If you use Firefox if you install the add-on called Web Developer you will get a right mouse menu item you can use to validate the current page for Section 508 compliance. To get Web Developer, use Firefox to go to
Install it, restart Firefox, then go to each page on your site, right click, choose Web Developer -> Tools -> Validate Section 508.
Also, try this accessibility evaluator service: