This website has been designed for ease of use. It conforms to the the W3C 'HTML 4.01' & 'Web Accessibility Initiative: level A' standards as well as US Govt section 508. Examples of browsers that support HTML 4.01 are: Mozilla 1.7+, Mozilla Firefox 1.0+, Netscape 6+, Opera 7+ & Internet Explorer 5+. Further information on standards and accessibility on this site can be found using the W3C links below.
accessibilty features
access keys
Keyboard shortcuts are intended to help users who have difficulty in using pointing devices such as a mouse. The top level menu for this site has keys 1 to 6:
[home: 0] [productmatter: 1] [buy: 2] [readingmatter: 3] [usability: 4] [contact: 5].
the submenu (on the left hand side) of each page will have access keys 7 to 10.
How to use access keys:
Internet Explorer - hold down the 'alt' key press the access key then press 'return'
Netscape/Mozilla - hold down the 'alt' key press the access key.
Opera 7 - hold down the 'shift' key, press the 'esc' key then press the access key (whilst balancing a life-size model of the Empire State building, upside down, on your left elbow).
If you have any difficulties or suggestions on how to further improve accessibility please use the contact information feedback form.