How can I enable touch-like scrolling in Firefox or Chrome?

I want to enable point-and-grab scrolling on Linux in Chrome or Firefox. Is there an extension, script or setting that enables this?

For an example of what I mean, take a look at most touch tablet and phones. But instead of on a tablet or phone, I'm on a desktop. So I want to use my mouse.

Instead of using the scrollbars and scrollwheel I could point the cursor at the page and move the content.

For Chrome you can use the chromeTouch extension.

Firefox has an equivalent addon, Grab and Drag.

For Opera I believe you can configure this internally by going to opera:config#Scroll Is Pan and ticking the "Scroll is Pan" checkbox.

On Twitter @rutgersmit responded with another option called Quick Scrolling.

A lot of mouse drivers let you use the middle button/wheel-click for this, with the benefit that it will work in all apps, not just web browsers. I know Logitech's have done this for years.

If you're using a non-OEM mouse have a look through the mouse applet in control panel, you may well already have this on your PC.