Possible duplicate:
Dynamically change site icon
How can I create a loading effect on the (favicon) tab in gmail. When I click on something that needs to use AJAX, gmail shows a nice loading circle in the bookmark or browser title bar. I know that I can change the icon, but all my attempts end in an ugly way - sometimes it works, sometimes not. Sometimes favicon does not change, sometimes it changes once and later, changes are not applied. What is the best way to do this?
javascript favicon user-experience visual-effects
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