MegaZone (zonereyrie) wrote,

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Flash pop-ups - stopping them in Firefox

As pop-up blockers have spread, blocking JavaScript pop-ups, the arms race has moved on. Some devious folks figured out that you could get Flash to spawn pop-up windows too. So now more and more pages have little Flash widgets in them which spawn ad windows. When I started using Firefox, and I turned on pop--up blocking, I rarely saw any pop-ups. But over the past couple of months I've been seeing more and more - sites using Flash to do their dirty work.

Last night i got fed up enough that I went looking for a solution, other than blocking Flash in general since I do find it useful on many sites, and I found this page.

1. Type about:config into the Firefox location bar.
2. Right-click on the page and select New and then Integer.
3. Name it privacy.popups.disable_from_plugins
4. Set the value to 2.

The possible values are:

0: Allow all popups from plugins.
1: Allow popups, but limit them to dom.popup_maximum.
2: Block popups from plugins.
3: Block popups from plugins, even on whitelisted sites.

It has worked fairly well for me so far, sites I know I got pop-ups on, I'm not.
Tags: firefox, geek, software, web
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