I have two categories on a site - news which contains news posts and blog - which contains blog posts. Each page has a wp_get_archives in the sidebar. I'd like to limit the archive listing by category but after looking at the codex this does not seem possible. http://codex.wordpress.org/Function_Reference/wp_get_archives
<?php wp_get_archives('type=monthly&limit=12'); ?>
That code lists the archives for all the posts, but I want to list archives for just that category. Am I using the wrong function? Or is this not possible?