We've attempted to make our site as accessible as possible, in line with W3C recommendations and industry best practice.
The site is CSS-based - no tables used for layout - so content and presentation are separated. As such, the site degrades gracefully so that it can be used easily even in text-based browsers like Lynx or using a 'standard' browser (e.g. Firefox) with page styles turned off.
It has been tested in Internet Explorer 5.5 and 6, Opera 9.02, Firefox 1.5 and Netscape 8 on PC; and in Safari 2, Opera 7.54 and 9.02, Firefox 1.0 and 1.5 and Netscape 7.2 on Mac. And you should find it's hanging together reasonably well if your browser's a little older too.