I have installed javascript on my page that causes a coupon to popup in a new window with a print button after 5 seconds.

My question is this, When I print the coupon (which is a single image" it also prints the "Print Button"

How can I get the coupon to print without the print button?

I don't know about css, so if you show me an answer with css, please explain
step by step how I do it with VSD.