protecting video files

Hi there - I am having some weird problems here. I am try to write a script that will check to see where a movie file is being called from. I want to define which web page I will allow a movie to be called from, and block all others. The script so far looks like this: The file gets called like this http://www.hardcorehosting.com/video/playmovie.php?movie=test.mov ============ playmovie.php =============== <?php header("Content-type: video/quicktime"); $file=fopen($movie, "r"); fpassthru($file); ?> ============= end script =================== which works fine until I add this at the top if($HTTP_REFERER != "http://www.hardcorehosting.com/video/test.html") { exit(); } to check and see where the page is being called from. It then gives me a broken image. I've checked for space's and can't see what I'm doing wrong :( Any suggestions ?? Thanks. Tim Schulte webmaster@hardcorehosting.com