Understanding Accessibility

Guideline 6. Ensure that pages featuring new technologies transform gracefully.

Checkpoint 6.2 - Ensure that equivalents for dynamic content are updated when the dynamic content changes

It is unethical to provide a lesser service to those who are disabled, therefore if using dynamic content, the alternative content should also be updated.

How do I do it?

When using <FRAME>, always load an entire page into a frame, not just an image, so that the frame title is correct.

when using <object>, add in a text alternative, in case the object cannot be executed.

<OBJECT classid="java:Press.class" width="420" height="420">
Uses of animation in multimedia include...
</OBJECT>

When using <applet>, add in a text alternative, in case the applet cannot be executed.

<APPLET code="orchard.class" width="800" height="600">
Simple interactive board game in which you must move a farmer around an orchard collecting apples.
</APPLET>

When using <script>, add in a text alternative, in case the script cannot be executed. I am using a javascript on this page fix the navigation post-it, so I also have a <noscript> tag explaining what the script does.

<body>
<noscript>
<p>
this script is a fix for css differences between netscape and internet explorer</p>
</noscript>

How do I check that it meets the WCAG criteria?

Check each dynamic element for alternative content. If any dynamic elements do not have alternative content, the page fails the check.

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