Many thanks to Porlo for providing me with the answer, and to everyone else who took the time and trouble to look at my post. No comments on the game so I will provide some myself, on the minus side, no splash screen no game over screen and no way to die during game, on the plus side the main character sprite needs no animation at all yet still looks ok whichever direction he/it is moving in, and by using a sprite of all on colour it can easily be resized to provide walls floors and cieling/platforms very quickly and easily.
cheers
Brett