Page Comparison

IBM's Accessibilty heuristic:  http://www-03.ibm.com/able/guidelines/web/accessweb.html

List provided by Paddison, C and Englefield, P article

1. Provide meaningful and relevant alternatives to non-text elements

• Images, graphs, video, sound, image maps, objects (applets, plug-ins, PDF files)
• If important information is being conveyed, provide a suitable alternative
• Alternatives provide all users with the same relevant content

 2. Support consistent and correctly tagged navigation

• Always provide a home page link
• Always provide a skip to main content link
• Correctly tag headings
• Meaningfully title frames

• Correctly tag table headers

 3. Allow complete and efficient keyboard usage

• Allows users to navigate by keyboard alone

 4. Respect users' browser settings

• Permit large font sizes
• Ensure page layout adjusts itself to suit font size
• Allow preferred colour settings

 5. Ensure appropriate use of standard and proprietary controls

• Text entry fields, drop-down menus, radio buttons, checkboxes, buttons
• Ensure controls do not stop the completion of the task

 6. Do not rely on colour alone to code and distinguish

• Verify colour alone is not used for information
• Ensure contrast is sufficient in images

 7. Allow users control of potential distractions

• Provide a means to stop blinking, flashing, flickering
• Allow users to control speed of scrolling e.g. ticker tape

 
8. Allow users to understand and control time restraints

• Notify user of time-out
• Allow users to request more time

9. Make certain the Web site is content compatible with assistive technologies

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Article containing nine IBM accessibility heuristics – see page 129