hmmm... all you do is highlight a word? I'm not sure what it's supposed to look like, but nothing happens in Opera for me. In Firefox, I have already have an add-on which gives a pop-up preview (called "CoolPreviews") of almost any link, and I watched the video and saw the map without actually clicking..(great for direct links to images).

(I disabled my web filters and pop-up blockers for the test.)

I'll try again later, and with other browsers.