Bug#391880: Firefox popup don't regain focus after first open, also if window.focus() is called

[Malix]

Package: mozilla-firefoxVersion: 1.0.4When click on a link that open a popup (another window) via _javascript_ window.open(), if the window is already open it doesn't regain focus also if window.focus() is called on existing window.
On this link http://www.massimofidanza.it/firefox you can find a test page. I test other distribution and Firefox official and this is theresult matrix
Debian 3.1       DOESN'T WORKK/Ubuntu         DOESN'T WORKFirefox dist. by Mozilla.org    OK WORKFedora Core 4                   OK WORKSuse 10.1                       OK WORK
Gentoo                          OK WORKSlackware                       OK WORKI also reported this bug on Ubuntu launchpad https://launchpad.net/distros/ubuntu/+source/firefox/+bug/33840
 and onMozilla bugzilla https://bugzilla.mozilla.org/show_bug.cgi?id=311956