diff --git a/lib/OpenLayers/Control/PanZoom.js b/lib/OpenLayers/Control/PanZoom.js
index dae4734022..65c906445e 100644
--- a/lib/OpenLayers/Control/PanZoom.js
+++ b/lib/OpenLayers/Control/PanZoom.js
@@ -15,7 +15,8 @@ OpenLayers.Control.PanZoom = OpenLayers.Class(OpenLayers.Control, {
 
     /** 
      * APIProperty: slideFactor
-     * {Integer}
+     * {Integer} Number of pixels by which we'll pan the map in any direction 
+     *     on clicking the arrow buttons. 
      */
     slideFactor: 50,
 
@@ -154,16 +155,16 @@ OpenLayers.Control.PanZoom = OpenLayers.Class(OpenLayers.Control, {
 
         switch (this.action) {
             case "panup": 
-                this.map.pan(0, -50);
+                this.map.pan(0, -this.slideFactor);
                 break;
             case "pandown": 
-                this.map.pan(0, 50);
+                this.map.pan(0, this.slideFactor);
                 break;
             case "panleft": 
-                this.map.pan(-50, 0);
+                this.map.pan(-this.slideFactor, 0);
                 break;
             case "panright": 
-                this.map.pan(50, 0);
+                this.map.pan(this.slideFactor, 0);
                 break;
             case "zoomin": 
                 this.map.zoomIn();