This web-site uses Web standards that offer a complete accessibility of web-pages to disabled and handicapped internet users (partial or complete blindness, motor or intellectual disability...) while being completely compatible with technical help-tools (refreshable Braille display, audio reader, mouseless browsing, etc...)

Alternate stylesheets

The web-site has been prepared with an alternate style sheets system which allow you to consult and print it according to your settings and your browsing preferences.


Compliance with W3C standards

The XHTML code is in accordance with the XHTML specification 1.0. It is tested with the help of W3C’s HTML validator ; the CSS code complies with the CSS2 specification.

It is tested with the help of W3C’s CSS validator ; however a known bug of the validator (linked with the character encoding) blocks direct CSS validation emanating from HTML files. The URLs to be thus submitted to the CSS validator are the style sheets themselves ; the pages of the web-site follow the Directions for access to the Web content.


Rules of Accessibility

In it’s current version, we respect all the rules of accessibility at Level 1 ; all rules of accessibility at Level 2 ; all rules of accessibility at Level 3.



A textual equivalent is furnished via the alt attribute of significative images, when they are not precisely described in the accompanying text that they illustrate. The alt attribute of non-significative images is empty. The page layout does not use invisible images (priority 1) ; images are used only when there is no other XHTML element that allows transmission of concerned information (priority 2). 


Structure et presentation

The utilisation of CSS positioning properties, by completely separating the presentation and content, allows the documents to maintain a coherent order outside of the CSS :

  • Header, contents, menus (priority 1) ;
  • the web-site is organised in sections that regroup articles according to themes (priority 2) ;
  • the page layout of the web-site is based exclusively on external style sheets (priority 2) ;
  • the pages are structured with the help of the headers h1.h6, used in appropriate order (priority 2) ;
  • the information comprising item-lists are tagged with the help of the elements ul, ol and dl (priority 2) ;
  • the presentation style is coherent throughout the entire site with a unique style sheet being used (priority 3).



The few client scripts used on the site do not serve any indispensable function for browsing or for consultation of the web-pages. They are accessible without JavaScript support (priority 1).

Redimensioning of characters

In order to allow users to modify the presentation of character size, the page design is based on the usage of relative unities (em and percentages) rather than on absolutes (pixels) (priority 2)

You can increase or decrease the size of characters in your browser menu (View » Text Size) or by using the mouse (Ctrl + scrolling the mouse)



The site’s web-pages use a game of standardised metadatas (Dublin Core – priority 2).


Browsing and Links

The web-site’s plan is accessible from each web-page ; the browsing menus depict the information structure (priority 2).

They give permanent access to the entire site (priority 3) ; the visible links are logically and structurally regrouped. The adjacent links are separated by printable characters in order to avoid confusion arising from assistive technologies (priority 3).