Web development

Hi all, on our homepage we have a revolving falsh banner (5 images). We want a facility in our back end that allows us to have a show / hide button next to these flash images so that if we want to only show one image, then we can.
In effect we want to control the 5 images so if we want to dispaly just one static one, we can. And if we want to display three images, we can. We presume this to be a five hour job and will pay £100