HTML Editor is a bogus app on Cox WebMail!
You will get no help from Cox technicians concerning HTML Editor in Cox WebMail! I tried and the "Chat" session was immediately terminated! You will have to search on the internet yourself. When you enter the two https addresses required by Java in the "Exception Site List", restart computer then go to Cox WebMail> "Compose"> HTML Editor you will get the message:
"Certificate has been revoked. The application will not be executed." (WAS REVOKED DEC 1, 2014!!!)
So it follows that this is a bogus app! Cox apparently has not done anything about it for nearly 2 1/2 years!