Browser zoom problem

[capyon]

We are running colorwheel in a page with css zoom applied, and the mouse and touch events do not work as needed. This may be because the coordinates of the touches and clicks are not taking the zoom factor into account, so the color wheel is not working for our project.

Steps to reproduce:

1. Go to http://jweir.github.io/colorwheel
2. In Developer Tools, Elements, choose the root element HTML
3. Set style zoom: 0.5
4. The color wheel is not operable