Note: If you want the image to be larger than the rollover area, or if you want the image to be in a different location than the image button that pops up, use the Show/Hide A Field action. First, you specify an icon for the button that will be shown and hidden. Next, you create a second button that acts as a hot spot when the mouse rolls over it. You do not assign an icon for the appearance of the second button. Instead, you use the Actions tab to show the first button when the pointer enters the second button, and hide the first button when the pointer exits.