Change order of tax items

Hi,
Just installed this great free software it is great and want thank you for it :)

I have 3 different taxes one actually using for Discount.

On Invoice Quick view it always displays main tax first (above others). I even tried adding them in different order to items but still same.

Where in the code can I change order of taxes displayed?
What is the file?

Thank you so much for your help.

Damir.