Layering Images in Adobe Flex

I would like a small Flex app where there is a tiled list of image thumbnails on the left and a canvas window on the right. I would like there to be two kinds of images in the tiled list on the left, faces and backgrounds. I would like the canvas on the right to be able to show one of each if they are dragged in from the left. The trick is that I would like the images to layer together so that there is only one picture (consisting of both types) in the main canvas. You can drag in a face then a background and the face should be over the background as part of the picture (the faces are always in front). I would also like to be able to drag in another background and have the background image change (same with the faces). The images can be in any format that is necessary, gif, png or fla files. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform Adobe Flex