Is it possible in javascript to make a customisable auto-complete for the address bar? Similar to the way browsers use auto-complete based on your history, this would use auto-complete based on the site's hierarchy. It's different to this site because the input events (user controls) are not triggered when typing in the address bar.

For example, a user wanting to find the elephants page on this web site would be typing http://coolstuff.com/things/elep (and it would suggest) hants by having hants appear after elep as selected text.

Or is there a good reason why address bar events are not part of the dom?