Button Set

This set contains 3 free stacks.

You can drop two images inside the MouseOver stack. The first image is only visible when you mouse-over and the second image will be the 'background' of the first. Because Stacks HTML in Edit mode you need to turn this off before you can add the first image. You can do this in the Page Inspector > Page tab. In the overlay panel you need to specify width of the image and the link (URL), optionally you can make the link open inside a new window. Off course you can set the length of the Fade-effect, from 0 to .9 seconds.

The other two stacks are normal Image-links. The first one is transparent and gets opaque when hovered. The second one is opaque and becomes transparent when hovered.
The transparency can be changed. Note: the effect only works after you made the image into a link.

The Fade-effect currently works in WebKit browsers like Safari and Google Chrome. Firefox will probably support this effect in the near future.