Accessibility features

This website has been carefully designed to be as accessible as possible for all our users. Should you experience any difficulty in using our site using its standard settings, then this page will help you make adjustments

Dynamic page updates

Turn dynamic page updates off

This site makes extensive use of advanced technologies to update the content within a page without loading a new page every time. While this offers considerable advantages to most users, any users of assistive technologies (such as screen readers or screen magnifiers), or users who navigate using the keyboard rather than mouse, may find this causes them problems.

The site still functions perfectly without these features, so we have provided a facility to switch dynamic page updates off if you wish. This can be accessed from this page, and if you are using a screen reader, text browser, or you use the keyboard to navigate through the page, you will see the first link on each page will switch dynamic page updates off or on.

Text Size

This site uses mostly relative font sizes and therefore is compatible with the user-specified text size option in visual browsers. The text size can be changed by holding down the 'ctrl' button and moving the mouse scroll wheel, or in Internet Explorer through the View > Text Size menu, and in Mozilla/Netscape, through the View > Text Zoom menu.

Internet Exporer 7 Users please note: Using the mouse scroll wheel in IE7 scales the whole screen. To scale text only instead, you must now use the View > Text Size menu.

Web standards

This site uses cascading style sheets for visual layout and is built to W3C standards. The XHTML and CSS is valid and the site, according to our judgement of the guidelines, complies with the WAI level 2 accessibility guidelines.

Browser compatibility

We test all our sites in all modern browsers on Windows, MacOS and Linux. All pages on this site use structured semantic markup which means that if your browser or browsing device does not support stylesheets, the content of each page is still readable and is presented in a logical order.

Javascript

Although this site uses javascript extensivley, it has also been designed to work perfectly without it, and to allow users to switch javascript functions off.