To see what happens to a Web page when its designer forgets text labels, first tell your browser not to display images. There is no link to anything that looks like it might sell you a movie. Very near the top of the page there is an image map with a series of links in it. With images off, it appears as blank space. But using Alt-text isn't always enough.
Some graphics give problems even when they are labeled correctly.
For example, it is tricky to turn images off in some browsers, so screen reader users and people with slow Internet con- nections might have to leave them on. Some browsers don't show Alt-text when the images are displayed. To accommoate these users, redundant links are needed, one for the person who wants to click on the picture and one for the person who doesn't. It is possible to read every word on a Web page and still not know what it says. One of the things that page designers do to make their pages understandable visually is to group related items together.