Accessibility Policy

At we aim to make our website accessible to all users, regardless of disability. Please note, however, that we rely on JavaScript and Flash, which may not be fully accessible in a screen reader. Please contact us if you have any issues.

Accessibility features on this website

Semantic markup

All pages follow a logical document structure. Screen reader users can get around pages quickly by moving between headings. Navigation menus are marked up as lists. Cascading Style Sheets (CSS) is used to control layout and presentation.

Text size

The site allows you to change font size to your preference regardless of which browser you are using. Here's how:

  • In Internet Explorer select Zoom then Zoom In or Zoom Out, or Ctrl/Cmd + Plus or Minus.
  • In Firefox select View, then Zoom, and then Zoom In or Zoom Out, or Ctrl/Cmd + Plus or Minus.
  • In Safari or Chrome select View, then Zoom In or Zoom Out, or Ctrl/Cmd + Plus or Minus.


Content images used in this site include descriptive alt text.


Link text has been written to make sense out of context, or else have explanatory title attributes. HTML buttons for interactions (eg, transport controls) have either explanatory title or value attributes.


The website will not function properly without JavaScript enabled. JavaScript is used to create dynamic features and sliders to allow ease of data input and as such may be difficult to use in a screen reader. We cannot guarantee the accessibility of external information linked to from this website. As we are continuously updating our website, exceptions to the above accessibility standards may sometimes inadvertently be introduced. Please let us know if you have difficulty accessing any of our content


If you experience any difficulty accessing this website, please do not hesitate to contact us by emailing