Is it possible to change your website content depending on if a user has triggered a specific event (or has a particular label) on your website or not? Practical example: You really want every visitor to watch your demo video. If they view the video, it is wasted real estate to keep trying to get them to watch the video, but if you only tell them on one pay they may never watch it. Can one set an event in the video (or a specific page, etc) that, once triggered, will alter the website content?