Create a logo for each style sheet, then in your style sheets add a logo class (I use logo-left, but you can call it anything you want). In that class you need a statement like this one
replacing the domain, directory, and image names for your site. All you have to do is change the file name in each style sheet, but use the same class name, and you can have a different logo load for each style sheet.
I set up templates for my logo. Check out the first post
in this link. You don't have to do what I've done, but it might give you some ideas.
