Rollover for text

The text block is blocking the rollover action on the button. One solution is to place a transparent button (create a button and check the transparent option) on top of the text. Then put your rollover actions on the transparent button. Unfortunately it will not change the state of the bottom button. To get around that you have to do it yourself with more actions to change the contents of the bottom button to the shaded image. You may have to resort to images instead of buttons on the bottom to get the desired effect.

I prefer just to create new buttons using the Button tool.