This site brings Chrome to a standstill on my new-ish core i5 laptop and windows 7. The pop up tracking hides the close button and the escape key doesn't close

This site brings Chrome to a standstill on my new-ish core i5 laptop and windows 7. The pop up tracking hides the close button and the escape key doesn't close it as I would expect a modal pop up to do. I am sure it was a fun exercise to do, but the user experience is not so good here.