diff --git a/lib/server/appcache.js b/lib/server/appcache.js
index 8a636498..64694333 100644
--- a/lib/server/appcache.js
+++ b/lib/server/appcache.js
@@ -39,21 +39,26 @@
      * exports.addFiles(['jquery.js', 'client.js']);
      * exports.addFiles([{'http://cdn.jquery/jq.js':'jquery.js'}, 'client.js']);
      */
-    exports.addFiles = function(pFileNames){
+    exports.addFiles = function(pFileNames) {
+        var i, n, lName, lCurrentName;
         /* if a couple files */
-        if(pFileNames instanceof Array)    
-            for(var i=0; i < pFileNames.length; i++){
+        if (Util.isArray(pFileNames)) {
+            n = pFilesNames.length;
+            
+            for (i = 0; i < n; i++) {
                 /* if fallback setted up */
-                var lCurrentName = pFileNames[i];
-                if(typeof lCurrentName === 'object')
-                    for(var lName in lCurrentName){
+                lCurrentName = pFileNames[i];
+                
+                if (Util.isObject(lCurrentName))
+                    for(lName in lCurrentName) {
                         FallBack_s += lName + ' ' + lCurrentName[lName] + '\n';
                         exports.watch(lCurrentName[lName]);
                     }
-                    
-                else exports.watch(pFileNames[i]);
+                else
+                    exports.watch(pFileNames[i]);
             }
-        else exports.watch(pFileNames);
+        } else
+            exports.watch(pFileNames);
         
     };