Use captions, text tracks, an alternate text file or an alternate sound track. Image maps allow a user to click on different parts of a picture to reference different WWW pages. This feature requires the ability to see, is completely inaccessible to blind persons. They don't know what the picture is, and don't know where to click, even if the picture is described. Users should be able to switch back and forth easily between text-only and graphic versions of the page.
Forms are usually inaccessible.
Provide a form which can be downloaded then mailed or e-mailed, or a phone number where the requested information can be provided. Minimize the use of tables . Tables cause problems for screen access systems, since the screen reading software tend to read line by line, character by character, from left to right. In a multicolumn document, the screen reader has no logical construct to follow, which makes it very difficult for the user. Use standard HTML formats, tags etc.