I'm using Google's DoubleClick for Publishers to track clicks-throughs on outbound text links. I have text ads and banner ads on my site. (DoubleClick for Publishers is here: https://www.google.com/dfp/info/welcome.html) I made a successful text ad with a website text link in DoubleClick for Publishers. The text ad shows in IE and Chrome but does not show in FireFox 3.6.15. To see problem go to: http://www.helicopterlinks.com. See the three columns of helicopter companies listed on this page. The very upper left-hand corner of the three columns is blank, in FireFox 3.6.15. This is where the DFP tracking text ad is and the ad is not showing. The text ad shows in IE and Chrome. The ad works using JavaScript. I just updated my JavaScript on my computer and the ad still does not work. This is a serious problem. According to my Google Analytics account, From January 1, 2010 - March 5, 2011, 24.03% of people visiting my site are using FireFox. If some one will please email me with updates, I'd appreciate it.