Hmm maybe this will help
http://briancray.com/posts/check-all-jquery-javascript basically when .checkall is clicked, all checkboxes on its fieldset are set to clicked as well. If you put javascript inside Comment() on the .php pages, it will work for that page (example:
http://mysidiaadoptables.com/forum/s...ead.php?t=4392 @ part 3)