Accessibility and Sitemap
To use access keys, hold down 'Alt' + 'Shift', while pressing the corresponding access-key and then press 'enter' to navigate to that page if it doesn't do so automatically. Some browsers or Mac users may use a different system for this, information should be available in your browsers help file.
The site's recently been updated to work better on mobile and tablet devices and I hope the colour scheme helps those that have difficulty with text on a white background, too.