Версия 1.1
Можно использовать:
1) [1 . 2 . 3] => <a target="_blank" href="/go.php?page=galaxy&galaxy=1&system=2">
[1:2:3]</a>
2) [1 , 2 , 3] => <a target="_blank" href="/go.php?page=galaxy&galaxy=1&system=2">
[1:2:3]</a>
3) [1 : 2 : 3] => <a target="_blank" href="/go.php?page=galaxy&galaxy=1&system=2">
[1:2:3]</a>
4) [1 2 3] => <a target="_blank" href="/go.php?page=galaxy&galaxy=1&system=2">
[1:2:3]</a>