macOS X 10.11 EL Capitan - macOS 10.12 Sierra - Running Safari v10

 First make sure your operating system and browser are fully up to date.

 Open Safari and Click on Safari>Preferences.

 mac safari 01

 Choose the Security option and select Plug-in Settings…

mac safari 02

 Click on the Java item, Hold Alt (or Option), click the drop down menu next to the workplace.waynetownship.com, and unselect Run in Safe Mode.

 mac safari 07

 Click on Trust, click Done. Then close the Safari preferences window.

 mac safari 04

Done.