Exposing the documentDrag property on the Navigation control. r=ahocevar (closes #39)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9805 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/Navigation.js

@@ -36,6 +36,13 @@ OpenLayers.Control.Navigation = OpenLayers.Class(OpenLayers.Control, {
      */
     dragPanOptions: null,
 
+    /**
+     * APIProperty: documentDrag
+     * {Boolean} Allow panning of the map by dragging outside map viewport.
+     *     Default is false.
+     */
+    documentDrag: false,
+
     /** 
      * Property: zoomBox
      * {<OpenLayers.Control.ZoomBox>}
@@ -158,7 +165,10 @@ OpenLayers.Control.Navigation = OpenLayers.Class(OpenLayers.Control, {
             this, clickCallbacks, clickOptions
         );
         this.dragPan = new OpenLayers.Control.DragPan(
-            OpenLayers.Util.extend({map: this.map}, this.dragPanOptions)
+            OpenLayers.Util.extend({
+                map: this.map,
+                documentDrag: this.documentDrag
+            }, this.dragPanOptions)
         );
         this.zoomBox = new OpenLayers.Control.ZoomBox(
                     {map: this.map, keyMask: this.zoomBoxKeyMask});