History of Document.visibilityState Revision history for: English (US) Oct 7, 2016, 4:54:28 AM teoli Previous Jul 8, 2016, 3:34:16 AM teoli Previous Jul 8, 2016, 2:30:38 AM teoli Typo Jul 8, 2016, 2:30:01 AM teoli WIP, first version