Move your mouse over the links in the "On this page..." section to quickly preview all the sections. If you use the keyboard to navigate, the sections will appear as you tab to each link. Press return to move the focus to the selected section so that you can tab to any links in the text.
Pressing Alt-9 (Windows) or Ctrl-9 (Macintosh) in most browsers will switch between all-text and interactive-text modes. In all-text mode, the links in the contents area jump to the relevant part of the page.
We believe that our technique adds addtional interactivity and interest to web pages, without impairing access. We've been able to link the show/hide mechanism to multimedia features such as QuickTime panoramas and Flash movies, creating dynamic sites which still allow every visitor full access to all the text content.
If you have problems with the interactive text feature, try switching to all-text mode. If you use a screen reader and experience problems, please let us know.
For keyboard users, there are hidden links on each page that jump to the site navigation (which is at the end of the document flow), and from the top of that section there's a link back to the page content.
The underlying code for the pages includes information about how the pages relate to one another. For example, they all include a link to the home page, and to this page, defined as 'Help' in the link code. These links show up in some text-only browsers such as Lynx. They can also be seen in some visual browsers such as Mozilla 1.2 or later - from the View menu choose Show/Hide, then Site Navigation Bar and select Show Only as Needed.
Many links throughout the site have a title which describes the content of the destination in more detail. These titles appear as 'tool tips' in many browsers.
Abbreviations and acronyms have their full meanings attached using the relevant HTML tags. Some browsers, such as Firefox, show the full version as a 'tool tip'.
All the pages on this site are written as far as possible to comply with World Wide Web Consortium standards. This makes sure that the pages are written in a way that should work in all browsers. In practice, unfortunately, some widely-used browsers have severe bugs that mean they don't work with some parts of standard HTML. For that reason, the pages with interactive panoramas use non-standard tags that which allow the pages to appear correctly in almost all browsers.
Creating pages to W3C standards takes care of the some accessibility needs, for example making sure that all images have text equivalents. Going further, all pages on this site meet the Priority 1 standards of the W3C Web Content Accessibility Guidelines, with many also complying with Priority 2 and Priority 3.
I am grateful to Mark Pilgrim for his site Dive into Accessibility. which is an invaluable reference on many of the issues related to accessible web pages. Further information on web accessibility can be found at Made for All, Accessify and the RNIB's hints on accessible web design.
In most browsers you can use keyboard shortcuts to link to the main
sections of the site. On a Mac, hold down the Control key and press the
relevant number - in Windows, use Alt and the number.
1) About Corvidae
2) Why Accessibility Matters
3) Virtual Tours
4) Exhibitions & Interpretation
6) Accessibility statement (this page)
7) Contact Us
9) Switch between interactive and all text modes