Accessibility policy

A number of measures were taken during the construction of this website to ensure that the largest number of people possible may access the information and the services provided through the site independently of the limitations of the user him or herself or limitations having to do with context of use.

The following measures were taken:

  • Use of cascading style sheets to present information
  • Tagging
  • User-friendly, intuitive, and alternative navigation systems
  • Alternative descriptions for images
  • Mechanisms to verify proper page loading through different search engines and devices
  • Use of universal and alternative formats
  • Links offering details about the function or destination of the hyperlink
  • Use of the standards set forth by the World Wide Web Consortium (W3C)
  • Access to the most frequently used commands using keyboard shortcuts
  • Website design adapted to browsers' screen size so that the site may be properly browsed using mobile devices

Compliance with standards

The pages contained in this website meet the AA standard according to the UNE 139803:2004 norm and comply with the Web Content Accessibility Guidelines 1.0 of the W3C. All the requirements contained under Priority 1 and Priority 2 and a subset of Priority 3 requirements have been manually checked for accessibility using various semi-automated tools, user agents, and specialist technicians.

Keyboard shortcuts

The following keyboard shortcuts are defined for this website:

  • Access key 0 - Statement on accessibility
  • Access key 1 - Home page
  • Access key 2 - Site map
  • Access key 3 - Contact us
  • Access key 4 - Search
  • Access key 5 - Access content

Use of access keys depends on the search engine:

  • Internet Explorer: ALT + shortcut + ENTER
  • Firefox: ALT + SHIFT + shortcut
  • Opera: SHIFT + ESC + shortcut
  • Google Chrome: ALT + shortcut

Text size

Accessible design allows users to customize the font size. This action can be carried out in different ways according to the search engine being used. The menu option where this can be done is as follows:

  • Mozilla Firefox: View > Zoom
  • Internet Explorer: View > Zoom
  • Opera: View > Zoom > %
  • Safari: View > Make text bigger
  • Google Chrome: Tools>Zoom

Technician information

In addition to the standards of web accessibility, this website uses XHTML 1.0 Transitional markup language and cascading style sheets for its design. These standards guarantee accessibility through any device that conforms to the W3C recommendations.


Some HTML pages may be complemented with other types of formatting. For these pages, well-established formats offering free plugins have been used:


The Adobe Reader full installer, which includes a plugin for the visually impaired, must be used in order to read the .pdf documents:

Download Adobe ReaderEste enlace se abrirá en una ventana nueva


Flash format for videos, animations, or multimedia

Download Flash playerEste enlace se abrirá en una ventana nueva


The following is a list of links by category with additional information on accessibility.

RULES AND TECHNICAL DOCUMENTS ON ACCESSIBILITY: enlace se abrirá en una ventana nueva
The World Wide Web Consortium (W3C), an international community working toward developing Web standards. enlace se abrirá en una ventana nueva
W3C's Web Accessibility Initiative.

HTML markup validator. enlace se abrirá en una ventana nueva
CSS validator. enlace se abrirá en una ventana nueva
Taw, a service evaluating web pages for accessibility issues.