Here are some specific instructions in regards to making content in a website 508 Compliant:
- All images that convey content must have equivalent alternative text specified in the alt attribute of the img element.
- Any images that are purely decorative, and not contextual, must have empty, or null, alternative text specified.
- All alternate text must convey contextual relevance to the page it is on.
- All images that convey complex content need to have longdesc attributes or equivalent text content available elsewhere on the page.
- All form non-text controls, e.g. input type image need to provide a text alternative that identifies it's purpose.
- All "noframes" elements must have appropriate alternative content for user agents that do not support frames.
- Heading elements should be used to convey logical hierarchy and denote the beginning of each section of content.
- If a page or application has a time limit, the user needs to be given options to turn off, adjust, or extend that time limit.
- If the site uses an authentication session, and it expires, the user should be able to re-authenticate and continue the activity without losing any data from the current page.
- Document should have a text-only version.
- Text-only version should contain the same exact information as the original document.