[xwiki-devs] Stylesheet for just some pages

Hi, I'm currently adding some stylesheets to Albatross to style the new OpenID login and registration form (http://jira.xwiki.org/jira/browse/XSALBATROSS-34). Since those OpenID styles are used only there I wanted to ask how it is possible to include the stylesheet just on the login and registration page!? Is there some special mechanisms? Thanks, Markus