diff --git a/lib/OpenLayers/BaseTypes/Date.js b/lib/OpenLayers/BaseTypes/Date.js
index 937b12d108..e7da56eb6f 100644
--- a/lib/OpenLayers/BaseTypes/Date.js
+++ b/lib/OpenLayers/BaseTypes/Date.js
@@ -49,13 +49,6 @@ OpenLayers.Date = {
                 return date.toISOString();
             };
         } else {
-            function pad(num, len) {
-                var str = num + "";
-                while (str.length < len) {
-                    str = "0" + str;
-                }
-                return str;
-            }
             return function(date) {
                 var str;
                 if (isNaN(date.getTime())) {
@@ -65,12 +58,12 @@ OpenLayers.Date = {
                 } else {
                     str =
                         date.getUTCFullYear() + "-" +
-                        pad(date.getUTCMonth() + 1, 2) + "-" +
-                        pad(date.getUTCDate(), 2) + "T" +
-                        pad(date.getUTCHours(), 2) + ":" +
-                        pad(date.getUTCMinutes(), 2) + ":" +
-                        pad(date.getUTCSeconds(), 2) + "." +
-                        pad(date.getUTCMilliseconds(), 3) + "Z";
+                        OpenLayers.Number.zeroPad(date.getUTCMonth() + 1, 2) + "-" +
+                        OpenLayers.Number.zeroPad(date.getUTCDate(), 2) + "T" +
+                        OpenLayers.Number.zeroPad(date.getUTCHours(), 2) + ":" +
+                        OpenLayers.Number.zeroPad(date.getUTCMinutes(), 2) + ":" +
+                        OpenLayers.Number.zeroPad(date.getUTCSeconds(), 2) + "." +
+                        OpenLayers.Number.zeroPad(date.getUTCMilliseconds(), 3) + "Z";
                 }
                 return str;
             };
diff --git a/lib/OpenLayers/Layer/ArcGISCache.js b/lib/OpenLayers/Layer/ArcGISCache.js
index 27173392c4..8c27c41431 100644
--- a/lib/OpenLayers/Layer/ArcGISCache.js
+++ b/lib/OpenLayers/Layer/ArcGISCache.js
@@ -443,9 +443,9 @@ OpenLayers.Layer.ArcGISCache = OpenLayers.Class(OpenLayers.Layer.XYZ, {
             url = url + '/tile/${z}/${y}/${x}';
         } else {
             // The tile images are stored using hex values on disk.
-            x = 'C' + this.zeroPad(x, 8, 16);
-            y = 'R' + this.zeroPad(y, 8, 16);
-            z = 'L' + this.zeroPad(z, 2, 16);
+            x = 'C' + OpenLayers.Number.zeroPad(x, 8, 16);
+            y = 'R' + OpenLayers.Number.zeroPad(y, 8, 16);
+            z = 'L' + OpenLayers.Number.zeroPad(z, 2, 16);
             url = url + '/${z}/${y}/${x}.' + this.type;
         }
 
@@ -457,23 +457,5 @@ OpenLayers.Layer.ArcGISCache = OpenLayers.Class(OpenLayers.Layer.XYZ, {
         );
     },
 
-    /**
-     * Method: zeroPad
-     * Create a zero padded string optionally with a radix for casting numbers.
-     *
-     * Parameters:
-     * num - {Number} The number to be zero padded.
-     * len - {Number} The length of the string to be returned.
-     * radix - {Number} An integer between 2 and 36 specifying the base to use
-     *     for representing numeric values.
-     */
-    zeroPad: function(num, len, radix) {
-        var str = num.toString(radix || 10);
-        while (str.length < len) {
-            str = "0" + str;
-        }
-        return str;
-    },
-
     CLASS_NAME: 'OpenLayers.Layer.ArcGISCache' 
 }); 
diff --git a/lib/OpenLayers/Layer/TileCache.js b/lib/OpenLayers/Layer/TileCache.js
index e4e92e9766..3008979c1f 100644
--- a/lib/OpenLayers/Layer/TileCache.js
+++ b/lib/OpenLayers/Layer/TileCache.js
@@ -116,31 +116,16 @@ OpenLayers.Layer.TileCache = OpenLayers.Class(OpenLayers.Layer.Grid, {
         var tileZ = this.serverResolutions != null ?
             OpenLayers.Util.indexOf(this.serverResolutions, res) :
             this.map.getZoom();
-        /**
-         * Zero-pad a positive integer.
-         * number - {Int} 
-         * length - {Int} 
-         *
-         * Returns:
-         * {String} A zero-padded string
-         */
-        function zeroPad(number, length) {
-            number = String(number);
-            var zeros = [];
-            for(var i=0; i<length; ++i) {
-                zeros.push('0');
-            }
-            return zeros.join('').substring(0, length - number.length) + number;
-        }
+
         var components = [
             this.layername,
-            zeroPad(tileZ, 2),
-            zeroPad(parseInt(tileX / 1000000), 3),
-            zeroPad((parseInt(tileX / 1000) % 1000), 3),
-            zeroPad((parseInt(tileX) % 1000), 3),
-            zeroPad(parseInt(tileY / 1000000), 3),
-            zeroPad((parseInt(tileY / 1000) % 1000), 3),
-            zeroPad((parseInt(tileY) % 1000), 3) + '.' + this.extension
+            OpenLayers.Number.zeroPad(tileZ, 2),
+            OpenLayers.Number.zeroPad(parseInt(tileX / 1000000), 3),
+            OpenLayers.Number.zeroPad((parseInt(tileX / 1000) % 1000), 3),
+            OpenLayers.Number.zeroPad((parseInt(tileX) % 1000), 3),
+            OpenLayers.Number.zeroPad(parseInt(tileY / 1000000), 3),
+            OpenLayers.Number.zeroPad((parseInt(tileY / 1000) % 1000), 3),
+            OpenLayers.Number.zeroPad((parseInt(tileY) % 1000), 3) + '.' + this.extension
         ];
         var path = components.join('/'); 
         var url = this.url;