Confirmation messages disappeared

Since going live with our site and installing SSL we now don’t get the confirmation or decline message on checkout. Thats the messages that come up in a rectangular box which says Congratulations, order completed etc.



With this missing it does, and i know it will, get confusing for people as you really have to look to see that the purchase was successfully or not.



Has any one come across this and is there a fix for it?



thanks