Hi! I'm new programming and I suppose this is a simple question but I've been looking around and couldn't find much. I have some png images with irregular forms to create buttons. I need the transparent part to be ignored (not clickable). How can I do this? I think I have, some way, to map the image, or I've been thinking in creating objects (like rectangules and triangles) over the image to aproximate to its shape. I've been reading about HTML5 canvas, but not sure if that's the solution. Thanks.