def dbh_checklist_1_chx(path, contenttype, extension, roottag, nsurl):
    """ Generic Checklist Handler - Returns checlist for Checklist Files """
    if (extension.lower() == 'chx' or extension.lower() == 'chf' or 
        extension.lower() == 'plx' or extension.lower() == 'plf'
        ) and nsurl.startswith('http://thermal.cnde.iastate.edu'):
        return 'db_checklist_editor'
    else:
        return False
