A More Accessible Pop-Up Window
More and more commercial websites are featuring pop-ups these days. In many instances, I'm noticing more pop-ups being used for advertising, probably due to the harsh reality that is "banner blindness". In other cases, pop-ups are used to display supplemental content to the parent page. Unfortunately, many designers know little about how to make a proper pop-up window that will be accessible.
Among the many concerns of accessible design is found in "Guideline 6" of the W3C's Web Content Accessibility Guidelines: http://www.w3.org/TR/WCAG10/#gl-new-technologies - "Ensure that pages are accessible even when newer technologies are not supported or are turned off." Simply put, you should ensure that your content remains accessible to those who modify their accessibility settings to disable scripting or whose choice of adaptive technology does not recognize scripting. See also the relevant Section 508 criteria: http://www.access-board.gov/sec508/guide/1194.22.htm#(l)
Popups are among the items that most often violate this accessibility guideline
A common pop-up window link will probably begin like this: