if ( $rrd_version < 1.1 ) { # it's RRD 1.0.x
$RRDoffset = 77;
}
if ( $rrd_version >= 1.2 && $rrd_version < 1.3 ) {
if ( $rrd_version >= 1.2 && $rrd_version <= 1.3 ) {
$RRDoffset = 67;