Bootstrap and HTML5 ARIA – the W3 approach for “Accessible Rich Internet Applications”

• http://stackoverflow.com/questions/18933084/what-are-these-attibutes-aria-labelledby-and-aria-hidden
• https://developer.mozilla.org/en-US/docs/Accessibility/ARIA
• http://www.w3.org/WAI/PF/aria/states_and_properties#state_prop_def

Accessible Rich Internet Applications (ARIA) defines ways to make Web content and Web applications (especially those developed with Ajax and JavaScript) more accessible to people with disabilities.