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WCAG 1.0/2.0 and buttons that open a new window?

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From: Jennison Mark Asuncion
Date: Jun 24, 2008 4:00PM

Hello,

Passing on a question from a colleague:


"Based on either WCAG 1.0 or WCAG 2.0, I've been looking for direction
regarding the opening of new windows and notifying the user beforehand.
In order to notify the user beforehand that an element will open a new
window, I've seen references to providing titles on hyperlinks and alt
on input type of image (understanding that entry input types of radio,
text, checkbox, file, and password shouldn't open new windows
automatically). However, I can't seem to find any reference to how to
implement notification to the user that an input type of button will
open a new window.

Can you indicate whether it is a requirement to notify the user if an
input type of button opens a new window? If the answer is yes, can you
provide some guidance on how this would be implemented in the code
(e.g., through the use of title, alt, etc.)?"

Jennison