Possible Duplicate:
Changing website favicon dynamically
How is it possible to create a loading effect on tab (favicon) in gmail way. When I click something which needs use AJAX, gmail shows a nice loading circle in tab or title bar of the browser. I know that I can change favicon but all my tries end in ugly way - sometimes it is working, sometimes not. Sometimes favicon doesn't change, sometimes it changes once and later changes are not applied. What is the best way to do that?
