[For 1.8] Pm alert İcons ringing bell animation

[blongso]

Hello Anka06!
I love this tutorial, thanks for that! So the forum looks more alive. Is it possible to animate the small envelope from the PMs when a PM has arrived?
Sometimes I click the PM alarm to read the PM later and then forget it. I would like it if the envelope "wobbles" until the PM is read. I found the enveloppe ;-)
faa-shake animated

Is it possible for you to create a tutorial for us?

THX in advance!
blongso