Usage
FaviconNotify.set(number); FaviconNotify.clear();
Longer example of use in HTML
<html>
<head>
<link rel="icon" href="favicon.ico">
<script src="faviconNotify.js"></script>
<script>
window.onblur = function() {
FaviconNotify.set(1);
};
window.onfocus = function() {
FaviconNotify.clear();
};
</script>
</head>
</html>
Riffing on the work of +Michael Mahemoff http://softwareas.com/dynamic-favicons
And http://userscripts.org/scripts/show/24430
And +Mathieu Henri http://www.p01.org/releases/DEFENDER_of_the_favicon/
See also http://faviconist.com/favicon-library (updated dynamic favicon library to incorporate badge-setting).