1) Use Internet Explorer

2) Download the latest Java from https://www.java.com/en/download/win10.jsp

3) Setup as below:

Go to Java in your Windows START list.
Open "Configure Java"
Go to the "Security" tab
You will see a box at the bottom "Exception Site List"
Click the box "Edit Site List..."
Copy into that box:
https://www.funkysnooker.com/
Then "OK" and "OK" to get out of Java.
Reboot Internet Explorer (doesn't work in other browsers) and go to Funkysnooker. You will probably get a prompt asking you to enable Java which you need to do!
WELCOME BACK!!

Is it not Java 7?

Java 8 is the latest and works on my PC. But 7 should work as well I expect