Accessibility

Browser Settings and Operating System Options

Virtually all current web browsers and operating systems have user-configurable accessibility options for better visibility and additional functionality.
For accessibility information about your specific browser or operating system, please refer to the manufacturer's website.

Browsers: Accessibility information and details
Internet Explorer 9 [http://www.microsoft.com/enable/products/ie9/]
Internet Explorer 8 [http://www.microsoft.com/enable/products/ie8/]
Internet Explorer 7 [http://www.microsoft.com/enable/products/ie7/]
Mozilla Firefox [http://kb.mozillazine.org/Accessibility_features_of_Firefox]
Safari [http://www.apple.com/safari/features.html#accessibility]
Chrome [http://www.google.com/accessibility]

Operating systems: Accessibility information and details
Windows 8 [http://blogs.msdn.com/b/b8/archive/2012/02/14/enabling-accessibility.aspx]
Windows 7 [http://windows.microsoft.com/en-US/windows7/products/features/accessibility]
Windows Vista [http://www.microsoft.com/enable/products/windowsvista/default.aspx]
Windows XP [http://www.microsoft.com/enable/products/windowsxp/default.aspx]
Macintosh OS X [http://www.apple.com/accessibility/macosx/vision.html]
iOS (iPad, iPod, iPhone) [http://www.apple.com/accessibility]
Android [http://eyes-free.googlecode.com/svn/trunk/documentation/android_access/enabling.html]