[Zope] has_permission for arbitrary user

I'm basically trying to do this: <dtml-if expr="acl_users.getUser('someuser').has_permission('Change DTML Document',this())"> Yes <dtml-else> No </dtml-if> Unfortunately, has_permissions seems to be implented to call has_permission on the currently logged in user; i.e. AUTHENTICATED_USER. So the question is, how do I determine if an arbitrary user (not the logged in user) has a certain permission on a certain object? Thanks, Mark --- Mark Gibson Kaivo, Inc. mark@kaivo.com