function _isNodeScrollable(element, name) {
	  var overflow = Style.get(element, name);
	  return overflow === 'auto' || overflow === 'scroll';
	}
Gets the style property for the supplied node. This will return either the
computed style, if available, or the declared style.

@param {DOMNode} node
@param {string} name Style property name.
@return {?string} Style property value.