def dbh_old_DC_viewer(path, contenttype, extension, roottag, nsurl):
    """ Datacollect v1 Handler - Returns old_DC_viewer for all DC run files """
    if extension == 'xml':
        f = open(path, 'r')
        f.readline()
        test = f.readline()
        if test.startswith('<run'):
            return 'db_datacollect_v1_viewer'
        else:
            return False
    else:
        return False
