Is it possible to push update on the favicon (ex. apple-touch-icon.png) on a web-mobile app for iOS?I mean, I saw a weather app that uses the actual app icon to update the temperature...is it possible in your html5 web app (saved to your home screen)?to be precise i just saw it working on this web app: pattern.dk/sunand their icon displays exactly the realtime temperature, is that just a trick maybe??