Getting Pinch-Zoom to work with Firefox in MacOS X

Just installed Firefox on Mac OS X Lion and realized that pinch zoom wasn't working. The Magic Trackpad is supported otherwise (swipe left for back, swipe right for next). Google solved the problem:

http://support.mozilla.org/en-US/questions/795269

You can restore the zoom feature by changing the values of the related prefs on the about:config page.

• browser.gesture.pinch.in -> cmd_fullZoomReduce
• browser.gesture.pinch.in.shift -> cmd_fullZoomReset
• browser.gesture.pinch.out -> cmd_fullZoomEnlarge
• browser.gesture.pinch.out.shift -> cmd_fullZoomReset

After this pinch-zoom started working, however, i found that it was a little jittery. The following options fixed this:

• browser.gesture.pinch.threshold -> 20
• browser.gesture.pinch.latched -> false