Sites That Resize My Browser Window: You Suck!

I wish the makers of Firefox would give me, the user, control over what Web sites do to the size and position of my browser window. I was checking out HP’s new notebooks and clicking on a link suddenly made my browser window move to the centre of my screen and become 20% in size. I hate that! Why should Firefox honour code that resizes the whole window? There should be a user override function.