Do you mean that you get (unrequested) pop-up windows or do you mean that another page loads in the same tab, making the wanted page to disappear?

Well, I don't know if this image is going to upload, but I did a screenshot so you can see what I mean. It happens on other websites, too. Remember transparencies, the clear plastic letter-size sheets you could write on? It's like stacking 2-3 sheets on top of each other, with each sheet saying something different. It looks like a jumbled mess. And it's not pop-ups.