Animation for a banner on a website

I need a simple but elegant animation to occupy a banner on the home page of a website that is intended to convey a series of simple messages. I will supply all text and all graphics (three or four photographs). This does not need to be very complex work but it does need to look world-class. If we can find a good balance between quality and cost then we'll be repeating this exercise on a regular basis to keep the website fresh. Plenty of scope for you to express yourself creatively so I'm intentionally not being prescriptive. More details available if you think this is something you can make a solid contribution to.