Accessibility
The site uses the Web standards to offer a complete page accessibility to the disabled persons (complete or partial blindness, motor or intellectual disabilities) while being compatible with the technical assistances (Braille systems, vocal reader, navigation without mouse, etc.)
Keyboard access
To access the site plan by means of the keyboard, use the “5” key: under Windows, with the shortcut key combination Alt+Shift+5 or Alt+5; under Macintosh with the combination Ctrl+5 or Cmd+5.To access the legal mentions, press the “1” key. The present page can be accessed by means of the “0” key.
Alternative styles
is built with a system of alternative style sheets, which enable you to consult it and to print the site according to your browsing preference settings.
Compliance with the W3C standards
The XHTML code complies with the HTML Specification of W3C ; the CSS code complies with the CSS2 Specification.
It has also been tested using the W3C CSS validator.However, a known bug of the validator (related to the character encoding) prevents the direct CSS validation from HTML files. The URLs to be submitted to the CSS validator are thus those of the style sheets themselves; the site pages comply with the Directives for accessibility to the Web contents. They are tested using the WebXact and Wave.
Accessibility rules
In its current version, we comply with all level 1, level 2 and level 3 accessibility rules.
Images
A textual equivalent is provided via the “alt” attribute of the significant images, when they are not described precisely in the text that they illustrate. The “alt” attribute of the not-significant images is empty. Page setting does not use invisible images (priority 1); the images are used only when there is not any CSS element making it possible to transmit the information concerned (priority 2). The images are used only when there is not any CSS element making it possible to transmit the information concerned (priority 2). Using the CSS positioning properties makes it possible to preserve a coherent order :
- title, contents, menus (priority 1) in the documents without use of a CSS, by completely separating presentation and contents.
- The site is organized in sections gathering together the articles by topics (priority 2);
- The page setting of the site is based exclusively on external style sheets (priority 2);
- pages are structured using the “h1” to “h6” titles in the suitable order (priority 2);
- information forming item lists is marked with “ul”, “ol” and “dl” tags (priority 2).
- Thanks to the use of a single style sheet (priority 3), presentation style is coherent on the whole site.
Scripts
The rare client scripts used on Argos are not used for any function essential to navigation or page consultation. Those are accessible without JavaScript support (priority 1).
Character resizing
In order to make it possible to the users to change the character size, page setting is based on relative units (“em” and percentages) rather than absolute ones (pixels) (priority 2).
You can increase or reduce the character size in your browser menu (View > Text Size) or by means of your mouse (moving the scroll wheel while holding down the “Ctrl” key).
Metadata
Site pages use a set of standardized metadata (Dublin Core - priorité 2).
Browsing and links
The site plan is accessible from each page; the browsing menus reflect the information structure (priority 2). They are displayed on each page and permanently give access to the whole site (priority 3); related links are logically and structurally gathered together. Printable characters separate the adjacent links in order to avoid their confusion by the assistance systems (priority 3).
