And also might want to try logging in as a different user. Am not able to log into my bank at all and they fully support only Safari and IE. Found someone fairly knowledgeable with OS X on their support staff and a no go.
However, if I log out and and back in as a new user I set up, I can log in via Safari, Opera, and Firefox. Have not been able to determine what user settings I may have that are preventing it yet. And to be honest, as often as I log into the bank, it's not really worth the time of troubleshooting vs switching users.