Is it possible to do a comm.button with scrolling caption /changing caption?

Hi all
Is it possible to do a comm.button with scrolling caption /changing caption?

Like a comm.button that shows : report problem -> changing to: suggest new idea -> changing to: share knowledge. And the make this loop over and over again ? I should still be able to press the button a activate a send mail function . Is this possible at all ?

Thanks in advance
/jan