Print off to the boxes in subtraction

I have a java script problem!? I want the user be able to exit when he or she feels like but the user has to go through all of the questions before she can exit. How can i do this? And how come the score does not want to print off to the boxes in subtraction, multiplication, division and the total score. Can someone please fix this for me!!?? I was working on this for hours! Thanks!!

evolution drives

Your are in the wrong forum for this question.