Forum Moderators: phranque
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There has been some confusion over image Alts and Titles, and it has made its way into browser implementations.
Image Alt text is what should show when the user has images disabled, or while an image is loading if images are enabled. It is alternate text, to be shown instead of the image. It is also read by screen readers for the blind, so it serves as an alternate representation for the visually-impaired, and should be used as such - to describe the image, and what it does on the page. If it doesn't do anything but provide formatting, like spacer .gifs, then its Alt should be blank.
Image Title text is shown when the cursor is hovered over an image, table, or anything else that can have a Title attribute.
That is the gospel according to Gecko in it's current revision, as used in Netscape and Mozilla browsers.
Microsoft, of course, does their own thing.
Jim