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iamlost - 8:45 pm on Mar 27, 2006 (gmt 0)
Specific to your 'refresh' question:Time outs and page refreshes - Web Access Centre [rnib.org.uk]: ... * Warn users that a page will refresh or time-out. Much more helpful detail on that page.
If you haven't investigated the RNIB (Royal National Institute of the Blind) site you certainly should. Especially their Web Access Centre [rnib.org.uk].
People who use screen readers or refreshable braille displays may find page refreshes or time-outs confusing or disorientating as it is not always clear what is happening. Part of this confusion is due to the fact that changes are occurring with the page without the user having interacted with the page or triggered and change themselves.
* Provide an on / off switch on pages that automatically refresh for those users that do not want it to refresh.
* Combo-boxes that trigger page refreshes should not be used. For menus that use drop-down combo-boxes, provide a 'Go' button.
* Server-side page refreshes should always be used rather than client-side page refreshes.
And follow the links to even more accessibility goodies.
I have this site bookmarked immediately after W3C
Techniques for Web Content Accessibility Guidelines 1.0 [w3.org]