Yeah, as long as it only activates that container based on typing in facebook or going to a bookmark, not just any random site hitting that URL. Which would the

Yeah, as long as it only activates that container based on typing in facebook or going to a bookmark, not just any random site hitting that URL. Which would then probably break following links to those sites - could you trigger it based on a normal navigation to that domain, but not based on some other site trying to fetch an image from it out of the blue?