middle/roll button

[Sol Hell]

Why does mozilla insist on not including middle (roll) button 
navigation. I mean if you click the middle mouse butoon and then you can 
navigate up, down, right, left, etc. I am not talking about turning the 
roll button.
This is such a major annoyance, especially if you want to convert IE 
users. I am willing to make netscape my default but this is keeping me 
from it since it slows down my browsing experience.