docs: function getScrollingPosition() {
  	var position = [0, 0];
  	if (typeof window.pageYOffset != 'undefined') {
  		position = [window.pageXOffset, window.pageYOffset];
  	}
  	else if (typeof document.documentElement.scrollTop	!= 'undefined' && document.documentElement.scrollTop > 0)	{
  		position = [document.documentElement.scrollLeft, document.documentElement.scrollTop];
  	}
  	else if (typeof document.body.scrollTop != 'undefined')	{
  		position = [document.body.scrollLeft, document.body.scrollTop];
  	}
  	return position;
  }