Template:ButtonHover

 

All of those parameters are optional. By default they display a red 100px button.
 * image-up: the top image file link.
 * image-down: the bottom image file link.
 * width: the width of the images (the default is 100px).
 * link: a link when pressing the button.
 * title: a title that will appear when hovering above the button.
 * style: extra style for the table.

Please note that the sizes of image 1 and image 2 should be the same.

Hide bottom image
In order to hide the bottom image, and only show it when hovering above the top image, add another parameter: |hidebottom= true However, it will not be displayed this way in editing mode.