The PNG behavior fix for Internet Explorer 5.5-6 has been around for some time. There are other pure JavaScript solutions to enable alpha-transparent PNGs in our favorite web browser, but I prefer the behavior approach, because I don’t have to clutter my JS code with browser specific hacks. This solution is only for <img> elements with a PNG as the source (alpha-transparent background images are another story, where the use of JavaScript is better suited)