Firefox: pop up window issue?

I am running the current release 3.07. The problem I am having and this just starting happening before the update so that didn't cause or fix the issue.

For example when I go to www.cars.com and view an individual car, when clicking on to view the larger images I was getting a new pop up window that was minimized like 1/3rd the size of a full screen window. Now for some reason that pop up window is full sized. I can click to make it the right size but that gets kinda annoying after a while.

Thanks for any input

Add an extension called Tabmix Plus and force popups to appear in new tabs. Makes things a little cleaner.
https://addons.mozilla​.org/en-US/firefox/addon/1122

Well the fix turned out to be a matter of minimizing the FF browser then opening the pop-up, which opened the minimized sized while at the same time restoring the maximized FF browser, then closing out and restarting the web site. Now the pop-ups don't open in a full screen sized window.

Thanks for that link Joe!

FZ1 wrote in post #7462712
Add an extension called Tabmix Plus and force popups to appear in new tabs. Makes things a little cleaner.
https://addons.mozilla​.org/en-US/firefox/addon/1122

thanks mate, that helped.