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Controlling Popups

This document explains all of the options available in Mozilla Firefox for controlling popups.

What are Popups?

Popup windows, or popups, are windows that appear automatically without your permission. They vary in size but usually don t cover the whole screen. Some popups open on top of the current Firefox window, while others appear underneath Firefox (popunders).

Firefox allows you to control both popups and popunders through the Web Features Options panel. Popup blocking is turned on by default, so you don t have to worry about enabling it to prevent popups from appearing in Firefox.

When blocking a popup, Firefox displays an icon in the status bar. You can use this icon to add a web site you re viewing to an exceptions list so that the site is allowed to display popups.

Blocking popups may interfere with some web sites: Some web sites, including some banking sites, use popups for important features. Blocking all popups disables such features. To allow specific web sites to use popups, while blocking all others, you can add specific web sites to the list of allowed sites.

Blocking popups doesn t always work: Although Firefox blocks most popups, some web sites may show popups using uncovered methods, even when blocked.

Allowing popups from certain web sites: After you ve enabled popup blocking, you can still allow specific sites to display popups. Select Tools > Options. From the Web Features panel, you can then add and remove sites for which you want to disable popup blocking.

This section describes how to use the Firefox Popup Blocker. If you re not already viewing it, open the Web Features Options by following these steps:
  1. Select Tools > Options.
  2. Click on the Web Features category.
From there, you can do the following things:
  • Block Popup Windows
  • Allowed Sites: This is a list of sites that you want to allow to display popups.
    • Add Site: Click this to add a Web site to the list.
    • Remove Site: Click this to remove a Web site from the list.
    • Remove All Sites: Click this to remove all of the web sites in the current list.

When a Popup Window Has Been Blocked

Every time a popup is blocked, an icon is displayed in the Firefox status bar to indicate that a popup has been blocked.

Using the popup control icon to add allowed web sites: You can use the popup control icon to quickly add a web site to the list of allowed web sites. Click the icon to open a list of blocked web sites. The current web site is already selected. Click Unblock Site to add the web site to the list of allowed web sites.

Note: Blocking popups may not always work and may interfere with some web sites. For more information about blocking popups, see What are Popups.

17 August 2003

Copyright © 2003 Contributors to the Firebird Help Project.

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