code: function(elementParam) {
          var element = OpenLayers.Util.getElement(elementParam);
          var cacheID = element._eventCacheID;
  
          this._removeElementObservers(OpenLayers.Event.observers[cacheID]);
      }
docs: Method: stopObservingElement
  Given the id of an element to stop observing, cycle through the
  element's cached observers, calling stopObserving on each one,
  skipping those entries which can no longer be removed.
  
  parameters:
  elementParam - {DOMElement || String}