Wouldn’t window.getComputedStyle(element) do the trick?
No, apparently this browser zoom is not a style property. Have a look to the link I posted above and to the links inside this post.
Sorry if I’m just stupid but my problem is caused by using the CSS zoom property on a div around the canvas.
Ah sorry, I thought you were using the zoom from the browser menu:
So, it seems multiplying (or dividing, I don’t know which is the right one in this case) the scene.pointerX / scene.pointerY values by the zoom value before calling scene.pick should make things work.