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I keep getting firefox windows that open under the page that I am viewing. How do I block "pop-unders"?

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Posted

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".

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.5
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • RealNetworks(tm) RealDownloader Chrome Background Extension Plug-In
  • RealNetworks(tm) RealDownloader PepperFlashVideoShim Plug-In
  • RealNetworks(tm) RealDownloader HTML5VideoShim Plug-In
  • RealDownloader Plugin
  • Next Generation Java Plug-in 10.10.2 for Mozilla browsers
  • Garmin Communicator Plug-In 4.0.4.0
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.8.638
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.6.636
  • Website Logon Plugin
  • GEPlugin
  • 5.1.10411.0
  • NPWLPG
  • Adobe Shockwave for Director Netscape plug-in, version 11.6.4.634
  • HP Product Detection Plugin
  • HP Active Check Plugin
  • Windows Activation Technologies Plugin for Mozilla
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

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