There are two parts (component and module) that have to be installed.
The component part allows you to define the image directorys, image title and layer text according to your given menu tree.
The module part allows you to display a specific or random images on one or multiple positions at the pages, the displaying depends on the active menu item.
With the module parameters you can set the following options:
*use a random image folder
*width and height of the display area
*how you would like to fit the images into the display area
*the number of images to rotate through
If you have any further ideas or questions please do not hesitate to contact me on my blog.