I am currently attempting to build a 3x3 slide puzzle (the ones where one space is empty and you slide the other pieces into the empty slot until the picture is back in order) and am wanting to make it so that when a piece is clicked it will switch places with the empty piece if it is touching it. Does anyone know of either a good tutorial site where I could find out how to do this or have any suggestions as to what the switching code should be? I am working in Flash CS5 using Actionscript 3.0. Thank you in advance for any ideas.