Change menu item class attribute How can one change drupal's default CSS classes? They are set in drupal's core and I don't find if there is any hook to change the #attribute entry of a menu item.

CSS classes are already set before the theme_menu_link hook call, the classes of defined in menu.inc. Is there a hook to alter these values ?
If it's just menu links you're after you can give Menu Attributes a whirl.