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Re: 6.5 Frames and dynamic content

From: Wendy A Chisholm <chisholm@trace.wisc.edu>
Date: Wed, 21 Apr 1999 17:30:49 -0500
Message-Id: <199904212232.RAA11894@trace.wisc.edu>
To: pjenkins@us.ibm.com, w3c-wai-gl@w3.org
Phil,

I agree that there is some redundancy.  I raised a similar issue a couple
weeks ago.

The original intention of this checkpoint was to warn authors about the
perils of using images as targets of frames because there is no way to
attach alt-text to the image.  However, that is more of a technique, so we
tried to generalize it a bit: "Ensure that the source of each frame is a
markup file, such as HTML." To make it less HTML-centric frames were
generalized into "dynamic content" since the contents of the frame often
change.

I agree that frames could be covered under 6.3.  A proposed rewording could
be as follows.  Note that the example is also different not only to reflect
frames, but to also incorporate discussion from the 4/15 call.

6.3 Ensure that pages are usable when scripts, applets, or other dynamic
objects are turned off or not supported. If this is not possible, provide
equivalent information either on an alternative accessible page or within
the content of the element.

A few examples: 
* An example of an alternative mechanism for an applet simulation is a
video recording of someone interacting with the applet simulation. 
* In HTML, use a NOFRAMES element within a FRAMESET.  
* When using JavaScript in an HTML document, do not use "javascript:" as
the URI for a link. If it is not possible to make the page usable without
scripts, provide a text equivalent with the NOSCRIPT element, use a
server-side script instead of client-side script, or provide an alternative
accessible page.  
Refer also to guideline 1. 

--wendy

At 12:26 PM 4/21/99 , Phil wrote:
>
>
>I'm not sure this has been covered in some of the proposed changes.
>
>6.5 Frames.
>"6.5 Provide an alternative presentation or page when the primary content
>is dynamic (e.g., when frame contents change, when scripts cause changes,
>etc.). "
>
>The intent of this checkpoint is not clear as stated and seems to repeat
>6.3  In particular, this is in the Frames section of the checklist, yet the
>reference is to dynamic content.  If it is specific to frames (not scripts)
>that change the content of the target frame, then it may not be an "issue"
>for browsers and assistive technologies that support frames, any more than
>selecting a link and loading the new page.  If the issue is related to
>browsers and assistive technologies that do not support frames, then is
>could be solved by adding "frames" to 6.3 to provide alternative accessible
>page when frames are not supported, or - removing the phrase "scripts cause
>changes" from checkpoint 6.5 because it's covered in 6.3.
>
>
>Regards,
>Phill Jenkins     (678-4517 tieline)  1-512-838-4517
>Accessibility Program Manager
>IBM Special Needs  Fax:  1-512-838-9367
>11501 Burnet Rd    pjenkins@us.ibm.com
>Austin TX 78758    http://www.ibm.com/sns
> 
Received on Wednesday, 21 April 1999 18:32:41 GMT

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