It's hell to really customize the layout with CSS though. It's all tables without classes or id's so if you want to target a specific part of the layout you end up with selectors like body table tr td table > td[colspan=2] table[border=3] td which breaks easily and is a pain to use and even then there's some things that are impossible to customize.

I've been rewriting parts of the site recently (compare http://jazz2online.com/J2Ov2/pictures/index.php with http://jazz2online.com/J2Ov2/pictures/index_old.php, HTML-wise) but the current layout does have a lot of flaws that are not fixable by just having it use CSS/HTML instead of tables.