If the semitransparent stuff is mainly in one area you could slice it in to multiple files.Or go for a 8bit png / gif with a matte of a light grey midway between the board's post colours.
edit: If you like the sound of PNGcrush, there's also psydk.org/PngOptimizer.php . It's stand-alone (you don't need to install it).
(edit: If you like the sound of PNGcrush, there's also psydk.org/PngOptimizer.php . It's stand-alone (you don't need to install it).
Kamikaze Stoat £4.09,
Mon 10 May 2010, 21:58,
archived)