the layer, and reset the layer to null. git-svn-id: http://svn.openlayers.org/trunk/openlayers@2971 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
the layer, and reset the layer to null. git-svn-id: http://svn.openlayers.org/trunk/openlayers@2971 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf