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usually, scrolling horizontally can be done on Windows machines with Ctrl + mouse wheel. Now, Firefox uses this to increase/decrease page size (which I hardly ever use).

Is there a way to tell FF to use Ctrl + mouse wheel for horizontal scrolling?

I looked at about:config and there are some options mousewheel. ..., but unfortunately I don't know, what they do.

Cheers,

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2 Answers

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This Mozilla Knowledgebase article covers the scrollwheel. I don't think this behavior can be achieved without an extension. I haven't tried it but you can try setting the action to -1 and seeing if the default Windows behavior takes over.

mousewheel.withcontrolkey.action -1
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Hm. -1 renders Ctrl + mouse wheel inactive, i.e., nothing happens anymore. As mentioned in the comment to the other answer, mousewheel.horizscroll.* doesn't be of any help either. Thanks for the try! – Boldewyn Aug 10 '09 at 21:44
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You can try the fix suggested here, but it will make you scroll horizontally just using the mousewheel on its own (without the Ctrl key). The following lines need to be set to "1":

mousewheel.horizscroll.withnokey.action - Set this to '1'
mousewheel.horizscroll.withnokey.numlines - Set this to '1'
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Looks like by default (I'm using FF v3.5.2), horizontal scrolling through the mousewheel alone works by default (tested on thehorizontalway.com). Changing the values I've mentioned apparently has no effect. – Isxek Aug 10 '09 at 18:43
The problem seems to be, that mousewheel.horizscroll.* is triggered only, if you have one of those fancy gamers' mice. – Boldewyn Aug 10 '09 at 21:42
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