Access: [6.3.1.4]: programmatic objects require testing (applet)
(Priority 1)

Cause:

Verify content remain accessible when programmatic objects are disabled or not supported. If an applet is used to generate dynamic content, provide a text equivalent between the opening and closing applet elements or via the "alt" attribute.

Testfile:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
	"http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en">
<head>
<title>aert1.0/6.3.1</title>
</head>
<body>

<script><!-- the script --></script>

</body>
</html>

References:

W3C WAI: http://www.w3.org/WAI//
HTML Techniques for WAI 1.0: http://www.w3.org/TR/WCAG10-HTML-TECHS/