[Tfug] Firefox question: can the up/down arrow key behavior be tweaked?

[Jim March]

I'm running Karmic-64, and have both the latest Google Chrome and Firefox 3.6.

In Chrome the arrow keys smoothly roll the page up and down.  In
Firefox it moves the cursor point around the text, which can jump
weirdly and basically makes arrow-reading a page useless.

Is there a way to change FF's behavior to match what Chrome does?

Jim