Hi Konrad,
What I would like to do is create one template for the whole website but have a different body background image per topic (and thus for all pages in that topic).
Is this still the target?
Try this:
in the index.php of Your template add to body-tag the background-image like this
<?php - ignore this php-tag - this is just for coloring this code
<body background="<?php echo TEMPLATE_DIR; ?>/background/bg<?php echo PARENT; ?>.jpg">
create a folder background in Your template-directory
put Your background-image in this folder and name it
bg0.jpg (for the top-level)
bg1.jpg (for the 2
nd level)
bg2.jpg (for the 3
rd level)
bg3.jpg (for the 4
th level)
of course - remove the background-image from the css file and do the rest of the formatting as usual in body {......}
no more - no less
regards from Himberg, next to Vienna