This website is developed according to WCAG 2.1 AA accessibility standards. This means that special technologies and processes have been used to make the content more accessible for people with disabilities.

In addition, better accessibility can be achieved by configuring some browser and operation system tools. This page provides information about those possibilities.

A more detailed help page on the same topic can be found at

Keyboard-only navigation

This website allows visitors to navigate using only the keyboard. Navigation works by pressing the Tab key repeatedly. Every keypress brings the focus to a next element, ie. link or a button. The element currently in focus is highlighted by a colour change and a framed box around it. To activate this element (ie. “click on it”), press the Enter key.

“Skip to main content“ skips the header of the page and continues at the main content of the page, to avoid going through the whole header and menu on every page.

Changing colors

On this website, it is possible to change the contrast of the content to make reading easier.

To enter the high-contrast view, press the Tab key or move the mouse to the "Contrast: Strong" link in the header, which changes the design of the page to contrast - the text becomes white, the links yellow and the background black. "Accessibility" refers to the same page you are currently on.


With a browser

All popular browsers allow zooming in and out by pressing the Ctrl (Cmd in OS X) and + or - keys. Or alternatively hold down the Ctrl key and scroll up or down with the mouse.

In your operating system

Windows 7 includes "Magnifier", a program that allows zooming. Press the "Start" menu and type "Magnifier" (first letters should do it) and press Enter. A small overlay window appears that can be moved around with the mouse and zooms everything in it.

In Windows XP, go Start > All Programs > Accessories >  Accessibility > Magnifier.

In Apple computers, go Apple menu > System Preferences > Accessibility (or Universal Access) > Zoom.

Browser extensions

For web browsers, there are extensions available that enable you to zoom in, adding to the existing functionality of the browser. For example, there is Zoom Pagelink opens on new page for Firefox, which allows you to enlarge the entire page as well as only the text; for Chrome there is AutoZoomlink opens on new page.

Using a screen reader

A screen reader is a software application that tries to interpret what is displayed on the computer screen and convey it in other forms, such as sounds or an audio commentary. This is a tool meant mainly for partially sighted persons.

A selection of popular screen readers:

Recommended screen readers for web browsers:

  • VoiceOver + Safari
  • Jaws + Chrome
  • NVDA + Firefox


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