Greasemonkey drag-style scrolling userscript

DragScroll.user.js

// ==UserScript==
// @name        DragScroll
// @include     *
// @version     1
// @grant       none
// @require     http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js
// ==/UserScript==

(function ($) {
	var dragging = false;
	var initialLeft, initialTop, initialX, initialY;
	var scrollable = $(window);
	var button = 3;

	scrollable.contextmenu(function (e) {
		return false;
	});

	scrollable.mousedown(function (e) {
		if (e.which !== button) {
			return true;
		}

		dragging = true;
		initialLeft = $(this).scrollLeft();
		initialTop = $(this).scrollTop();
		initialX = e.clientX;
		initialY = e.clientY;
		return false;
	});

	scrollable.mousemove(function (e) {
		if (dragging) {
			$(this).scrollLeft(initialLeft - (e.clientX - initialX));
			$(this).scrollTop(initialTop - (e.clientY - initialY));
			return false;
		}
	});

	scrollable.mouseup(function (e) {
		if (e.which !== button) {
			return true;
		}

		dragging = false;
		return false;
	});
})(jQuery.noConflict(true));

Hey yuryshulaev,
This script is amazing. I tried another one on greasemonkey with palemoon and the scrolling speed basically depended on the page. But this one works perfectly out of the box.
Now ... I need your help on how to configure the mouse button used to dragscroll. How can I change it from right button to left button.
Also, is there a disable drag button, like ctrl for example?
Thanks a lot man ... this is some really great work in so few lines.

Hi. You can change it to use the left mouse button by replacing if (e.which !== 3) { with if (e.which !== 1) { on line 19. To also disable it when Ctrl is being held you can change this line to if (e.which !== 1 || e.ctrlKey) {. You might also want to remove the scrollable.contextmenu part (lines 14 to 16) if you use the left button and don’t want to disable context menus.

I have also used this addon: https://addons.mozilla.org/ru/firefox/addon/scroll_anywhere/ — it has a lot of settings.

Thanks a lot mate. This || e.ctrlKey is what I was looking for.

However, I was already using that scroll anywhere add on on waterfox, but since I switched to pale moon, it didn't work there and greasemonkey seemed like the only solution. But then someone directed to an old repo of old firefox addons and I found a good alternative to it for pale moon.

Thanks a lot again for your reply mate, I appreciate your help and this little gem of script.