This problem started when I updated from Firefox 4x to 5.0 I go to www.mafca.com/classifieds.html and click on an ad category. Then a window pops up over the original page. I can view everything and then close the window and return to the original page. But if on that popup page, I click on a link which opens in a new window, view it, and close that page, the popup page disappears BEHIND the original page. I wrote those pages - can you think of any reason why this is happening? If I look at the web site with IE or Safari, the page operates as it was designed. Thanks Rick Black El Paso Texas