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- 1). Click on the Firefox button located at the top-left corner of your browser window. If you have not yet updated to the newest version of Firefox, click "Tools" from the top of the browser and click "Options."
- 2). Click "Options." Select the "Content" tab in the dialog box.
- 3). Check the box next to "Block pop-up windows" by clicking on it. If you click "Exceptions" you can type in the addresses of trusted sites from which you will allow pop-ups.
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