Adobe Acrobat Zooms

Hello,

I am working on making a pdf interactive. My client would like to have certain areas when clicked on zoom in and out. iFor Example: A book cover when clicked on will zoom in and when clicked again will zoom out.

I have figured out how to do this by creating two buttons with actions on top of desired area. It works well but is very time consuming to create. Is there a faster way I'm overlooking?

Note: I have also tried using the link button. This works also works well but doesn't have the option to show a "Tool Tip" which my client also desires.

Any feedback is greatly appreciated.

Thanks