.../openlayers/plugins/behaviors/openlayers_behavior_fullscreen.js      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/openlayers/plugins/behaviors/openlayers_behavior_fullscreen.js b/openlayers/plugins/behaviors/openlayers_behavior_fullscreen.js
index 1842590..56811ee 100644
--- a/openlayers/plugins/behaviors/openlayers_behavior_fullscreen.js
+++ b/openlayers/plugins/behaviors/openlayers_behavior_fullscreen.js
@@ -34,7 +34,7 @@ Drupal.openlayers.addBehavior('openlayers_behavior_fullscreen', function (data,
  */
 Drupal.openlayers.fullscreenToggle = function () {
   var $map = jQuery(this.openlayers.div);
-  var extent = map.getExtent();
+  var extent = this.openlayers.getExtent();
 
   $map.parent().toggleClass('openlayers_map_fullscreen');
   $map.toggleClass('openlayers_map_fullscreen');