I use FireFox on a Macintosh system. I recently purchased an Apple Magic Mouse, which has no discreet buttons and uses touch sensing to detect right and left mouse clicks. I also enabled a plug-in that allows support for a middle mouse click. FireFox has this "feature" where by a middle mouse click on a tab can close that tab. When I'm using the Magic Mouse, sometimes I want to left click on a tag to activate it, however if I'm not paying close attention my finger is too far to the right, and the click with be detected as a middle click instead of a left click. So instead of accessing the tab, I will loose it completely, which leads to very undesirable user experience. How can someone prevent FireFox from closing tabs with a middle mouse click?