I keep getting firefox windows that open under the page that I am viewing. How do I block "pop-unders"?
When I open Marriott.com another hotel site called Room Key opens under the page I am viewing. I wrote to Room Key and they said that my browser should be set to block "pop-unders". I can find no way to do this. I have pop-up blocker turned on but it doesn't seem to work with "pop-unders".