function stopWatchingForValueChange() {
	  if (!activeElement) {
	    return;
	  }

	  // delete restores the original property definition
	  delete activeElement.value;

	  if (activeElement.detachEvent) {
	    activeElement.detachEvent('onpropertychange', handlePropertyChange);
	  } else {
	    activeElement.removeEventListener('propertychange', handlePropertyChange, false);
	  }

	  activeElement = null;
	  activeElementInst = null;
	  activeElementValue = null;
	  activeElementValueProp = null;
	}
(For IE <=11) Removes the event listeners from the currently-tracked element,
if any exists.