The ZoomToMaxExtent control should extend the OpenLayers.Control.Button

and not OpenLayers.Control.

lib/OpenLayers/Control/ZoomToMaxExtent.js

@@ -4,7 +4,7 @@
  * full text of the license. */
 
 /**
- * @requires OpenLayers/Control.js
+ * @requires OpenLayers/Control/Button.js
  */
 
 /**
@@ -16,19 +16,14 @@
  * Inherits from:
  *  - <OpenLayers.Control>
  */
-OpenLayers.Control.ZoomToMaxExtent = OpenLayers.Class(OpenLayers.Control, {
+OpenLayers.Control.ZoomToMaxExtent = OpenLayers.Class(OpenLayers.Control.Button, {
 
     /**
-     * Property: type
-     * {String} The type of <OpenLayers.Control> -- When added to a 
-     *     <Control.Panel>, 'type' is used by the panel to determine how to 
-     *     handle our events.
-     */
-    type: OpenLayers.Control.TYPE_BUTTON,
-    
-    /*
      * Method: trigger
-     * Do the zoom.
+     * 
+     * Called whenever this control is being rendered inside of a panel and a 
+     *     click occurs on this controls element. Actually zooms to the maximum
+     *     extent of this controls map.
      */
     trigger: function() {
         if (this.map) {