Well, not exactly banners, I just used this word as it is easier to understand in a title.
So, I have 16 different CTA "boxes" with a couple lines of persuasive copy and a CTA button. I want to test which one performs the best. I am showing the boxes randomly and counting button clicks as events in GA. However, without knowing how many times each CTA "ad" has shown, number of button clicks doesn't say much.
So, with Google Analytics, how do I trigger an even every time such CTA box is shown? It's basically a DIV that I'm in need of placing some javascript to.