You may wish to download/install a free
software program called Ad Blocker Plus
. This should keep pop up ads from taking over your browser screen.
Click the link above to access the Ad Blocker Plus web page. It allows you to download/install Ad Blocker Plus software for each browser that you are running on your computer.
Chances are good that "if" you get these types of pop up ads that take up a lot of your browser screen on one browser (e.g., Firefox) you probably get this same problem on another browser (Google Chrome).
Hope this helps.