calling 'dispatchEvent' of null

[ghost]

I got this error, in my implementation of drag and drop on android 4.0, It happens when you drag element out of window to address bar. To fix this I added ' || document.body;' in lines 347 and 407, because in this case function document.elementFromPoint returns null.

[moll]

I can confirm something similar happens on iOS v7.0.3 when dragging things out towards the browser chrome:

TypeError: 'null' is not an object (evaluating 'previousTarget.contains')