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I absolutely don't want to have Firefox open a new window.

Is there an extension that could put the window back in the Firefox window as a tab ?

I have already activated an option that should prevent this (open new tab instead of a new window), but some people don't want their site to be correctly referenced and used tricks like this which circumvent this setting:

function popitup(id) {
if (window.focus) {newwindow.focus()}
return false;

PS: This is not really a quality site, but here is where I found this: The function is in the file: ajxfun.js

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up vote 1 down vote accepted

You can set to 3 and to 2 under about:config or select the following option under Tools menu / Options / Tabs:


However, as the page states:

This [diverting all links] does not include: JavaScript calls to with the "features" parameter (3rd parameter).

Thus since that page is using the 3rd param and specifying a height and width for the popup, it is allowed to break free and open a new window. (I don't understand the point of this BTW. If it is a user preference, then why leave this one loophole for obnoxious webmasters to inevitably exploit and thus irritate us?)

Anyway, the following add-ons might help.

  1. Tab Utilities has a single window mode that you can check out, among other "Force" options:


  2. So does Tab Mix Plus:


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