function __cmp_nodes($a, $b) {
$as = array_reverse(explode(".", $a['hostname']));
$bs = array_reverse(explode(".", $b['hostname']));
function __cmp_nodes($a, $b) {
$as = array_reverse(explode(".", $a['hostname']));
$bs = array_reverse(explode(".", $b['hostname']));