I'm using base64_decode() for outputting images in KSMAS. I'm using now a rather big image in the header and I'd like to let it be cached by the browser, but I don't have a clue on how to do that.
I'm using he central script (index.php) to output images when it has an argument 'img' passed through GET. (like index.php?img=head)
The question is how to cache only certain outputs?