Thanks for the link - I've had a look and it's not quite the solution I'm looking for. I'll have to see how I can get it to be set up within the class_bbcode.php and find the hooks that will be needed to parse it up. Looks like I'll have to use the php base64_encode() function within the parser, then use a javascript decode as document.write (as above) to reproduce the original text on the posts. I'll keep this thread posted as to my progress