How can one programmatically trigger an animation on a button (e.g. Jump animation).  I would like the animation to loop until the button is clicked.

I am trying to create something similar to following scenario.  On the Mac toolbar, when a background process has been completed or user attention is needed, a given button on the toolbar will begin to Jump.  It will continue to do so untill the user clicks the button.  For instance, a new version of Safari is ready to be installed. Similarly, I have many background processes and would like to use the WebAqua toolbar in a similar fashion. 

Please let me know how this can be accomplished.