Here, this will work.
Save this as galleries.php
<?php
$fileName = "./galleries.txt";
mt_srand( (double) microtime() * 1000000 );
$a = file($fileName);
$randNum = mt_rand( 0, sizeof($a)-1 );
header( "Location: ". $a[$randNum] );
?>
Then create a txt file loaded with galleries one line at a time. And use yourdomain.com/galleries.php as the link and it will pull a gallery from that text file. It pulls a random gallery so if you have 200 in there chances are the surfer will not see the same gallery for some time.
I use it here:
http://www.free-porno-mpegs.com/