The main purpose of the RadRotator control is to rotate items. The item's content can be text or HTML data (contains several elements), but please note that the rotator control manipulates the whole item object (the itemtempalte), not only a part of it. You need to form the content of an RadRotator's item yourself, because the rotator control does not control the data representation inside the ItemTempale - it manipulates the whole item container.
This being said that your scenario can be covered with the RadRotator control, but you need to implement the desired effect your self and I believe that the jQuery library will be a good starting point for you.
I hope this help.
the Telerik team