I need to make another condition here. I do not want to stop the other images on the page to not cache as they include navigation bars and other images that appear on every page. If the entire page has to be reloaded everytime, then the whole program slows down by a factor of 50. I only need the image that is generated by GD on the fly to not cache.

All the solutions so far I believe are applied to the entire page (all images) and not only to the generated image.

I hope I am clear and not missing something easy.

Tony