Set "browser.backspace_action" to either 0 or 1
0 - Pressing backspace button will go back a page in the session history
1 - Pressing backspace button will scroll up a page in the current document and
[Shift]+[Backspace] will scroll down.
Get more Firefox about:config tweaks, and for more keystroke goodness, check out Adam's guide to mouse-less browsing in Firefox.0 - Pressing backspace button will go back a page in the session history
1 - Pressing backspace button will scroll up a page in the current document and
[Shift]+[Backspace] will scroll down.
Customizing Firefox [Ubuntu on Dell Inspiron 1501]
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