How to enable Java 6 Web plug-in for Max OS X Lion / Mountain Lion / Mavericks

http://support.apple.com/kb/ht5559

JAVA SE6 (OS X v10.7/10.8/10.9) -> http://support.apple.com/kb/DL1572
JAVA SE6 (OS X v10.6) -> http://support.apple.com/kb/DL1573
JAVA SE5 & SE6 (OS X v10.5) -> http://support.apple.com/kb/DL1359