Looking for solution; Can learner save final freeform responses as reference

I am trying to tweak Rens template from above with JS. When simply using window.print() the result doesn't look too appealing. So I tried this somewhat more elaborate code from Brian Batt. However, this results in no reaction at all (i.e. no print dialog popping up, and nothing else happening). 

Using the simple window.print function isn't too bad, I just would like not have the print button included in the print ;-) (as seen in the attachment)

Any suggestions on what I could do differently? I also wondered whether it is possible to assign the print button a kind of non printing status. 

EDIT: Another problem I seem not to be able to solve is changing the font size of the output. On the result page as well as on the print the font is tiny. I have the textboxes set to automatically adjust depending on the texts quantity, and there's lot of space left on the page. See what I mean in the seconde attachement, please.