Options +FollowSymlinks
RewriteEngine on
RewriteBase /
RewriteRule ^album/(.*)?$ index.php?dir=$1 [L]
RewriteRule ^tiny/(.*)?$ image.php?filename=$1&tiny=true [L]
RewriteRule ^large/(.*)?$ image.php?filename=$1&large=true [L]
RewriteRule ^small/(.*)?$ image.php?filename=$1&small=true [L]