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Posted by yb on 11/22/05 06:02
Hi,
I'm a bit confused about WCAG 1.0 checkpoint 7.3, at:
http://www.w3.org/TR/WCAG10-TECHS/#tech-avoid-movement
which reads:
"7.3 Until user agents allow users to freeze moving content, avoid
movement in pages. [Priority 2]"
This is pretty vague. I've used javascript in some places to fade from
one color to another on a timer. Its not absolutely necessary and the
content is accessible without the script, its just a visual effect.
So, does this color fading mean this checkpoint is not satisfied. What
about hovering over a link which opens up a drop down style menu? That
could be considered movement as well.
I first thought it meant choppy movement, or blinking colors, i.e.
something distracting and annoying. However, the descriptions seem
much more strict in the guidelines.
Also, the "Until user agents .." part is also a concern. Exactly how
would a user agent stop movement, there are so many factors. For
example, javascript allows for timer based code, would all of this be
disabled, how could a user agent know what to do?
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