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Standards Compliance 

All pages on this site follow priorities 1 & 2 guidelines of the W3C Web Content Accessibility Guidelines.

All pages on this site validate as XHTML 1.0 Strict.

All pages on this site use structured semantic mark-up. H1 tags are used for main titles, H2 tags for subtitles.


Structural Mark-up 

Web pages on include 4 different areas: 

A header section that contains the main site heading and navigation,

A main content area

A "right Nav" column that contains supplementary information, glossarys, document downloads and common links

A footer.

When CSS (Cascading Styles Sheet) are not applied to a document (or when using a screen reader), the 4 areas are read in the above order.



Unless they are purely decorative items, all images used on this web site have suitable alt attributes. 

Content should be usable/accessible with images "off" (disabled). 

The main navigation bar on this site uses an Image Replacement technique that makes the links accessible to non-visual browsers. 



Many links have title attributes which describe the link in greater detail, unless the text of the link already fully describes the target. 

Links are written to make sense out of context. 

URLs are permanent whenever possible. 



All form controls are appropriately and explicitly labeled. 



We are using non obtrusive client-side scripts. 

Content of this web site is usable without JavaScript support.


Pop up Windows 

In visual browsers, unless Javascript is disabled, a small icon appears next to links to external resources. 

Browsers with Popup Blockers should be able to access these external documents.


Visual design 

This site uses cascading style sheets for visual layout.

This site uses only relative font sizes, compatible with the user-specified "text size" option in visual browsers.

If your browser or browsing device does not support stylesheets at all, the content of each page is still readable.

Any information conveyed through the use of color is also available without color (i.e. text based).


Accessibility references 

W3 accessibility guidelines, which explains the reasons behind each guideline.

W3 accessibility techniques, which explains how to implement each guideline.

W3 accessibility checklist, a busy developer's guide to accessibility.

U.S. Federal Government Section 508 accessibility guidelines.


Accessibility software 

JAWS, a screen reader for Windows. A time-limited, downloadable demo is available.

Home Page Reader, a screen reader for Windows. A downloadable demo is available.

Lynx, a free text-only web browser for blind users with refreshable Braille displays.

Links, a free text-only web browser for visual users with low bandwidth.

Opera, a visual browser with many accessibility-related features, including text zooming, user stylesheets, image toggle. A free downloadable version is available. Compatible with Windows, Macintosh, Linux, and several other operating systems.


Accessibility services 

Bobby, a free service to analyze web pages for compliance to accessibility guidelines. A full-featured commercial version is also available.

HTML Validator, a free service for checking that web pages conform to published HTML standards.

Web Page Backward Compatibility Viewer, a tool for viewing your web pages without a variety of modern browser features.

Lynx Viewer, a free service for viewing what your web pages would look like in Lynx.

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