You'll find on this page some examples which respect rules of the XUL Challenge 2004.
This examples use Mozilla Technologies, such as XUL, the real XUL language, the XUL of Mozilla (XUL is not a generic term for XML user interface language, contrary to what organizer of XUL challenge 2004 says; XUL is the name of the XML user interface interface language of Mozilla.org, one of the first of this kind of language).
You need the Mozilla browser to run this examples. You can download zip package of them.
(Last modification : may 24,2004)
The counter is now embedded in an XBL component, so you can reuse it easily in all application you want.
For more information about XUL, XBL etc, see http://www.xulplanet.com or http://xulfr.org (french).
Author of this examples : Laurent Jouanneau