code: function getOffsetParent(node) {
  		var offsetParent = node.parentNode, documentElement = document.documentElement;
  		while (offsetParent && offsetParent !== documentElement) {
  			var style = window.getComputedStyle(offsetParent, null);
  			if (!style) { break; }
  			var overflow = style.getPropertyValue("overflow-y"); //$NON-NLS-0$
  			if (overflow === "auto" || overflow === "scroll") { break; } //$NON-NLS-1$ //$NON-NLS-0$
  			offsetParent = offsetParent.parentNode;
  		}
  		return offsetParent;
  	}
docs: Returns the parent of the node that has the vertical scroll bar.
  
  @name orion.webui.littlelib.getOffsetParent
  @function
  @static
  @param {Element} node The node to lookup the offset parent