diff --git a/lib/client/viewer.js b/lib/client/viewer.js
index 3b12ec1f..03e360ea 100644
--- a/lib/client/viewer.js
+++ b/lib/client/viewer.js
@@ -3,9 +3,12 @@ var CloudCommander, CloudFunc, $;
  * https://github.com/fancyapps/fancyBox
  */
 (function(){
-    var cloudcmd                        = CloudCommander;
-    var Util                            = CloudCommander.Util;
-    var KeyBinding                      = CloudCommander.KeyBinding;
+    "use strict";
+    
+    var cloudcmd                        = CloudCommander,
+        Util                            = CloudCommander.Util,
+        KeyBinding                      = CloudCommander.KeyBinding,
+        FancyBox;
     
     cloudcmd.Viewer               = {
         get: (function(){
@@ -13,15 +16,12 @@ var CloudCommander, CloudFunc, $;
         })
     };
     
-    var FancyBox                        = {};
-    
     cloudcmd.Viewer.dir                 = './lib/client/viewer/';
     FancyBox.dir                        = cloudcmd.Viewer.dir + 'fancybox/';
         
-    /* function return configureation
-     * for FancyBox open and
-     * onclick (it shoud be
-     * different objects)
+    /**
+     * function return configureation for FancyBox open and
+     * onclick (it shoud be different objects)
      */
     FancyBox.getConfig                  = (function(){
         return{
@@ -57,7 +57,8 @@ var CloudCommander, CloudFunc, $;
         };
     });
     
-    /* function loads css and js of FancyBox
+    /**
+     * function loads css and js of FancyBox
      * @pParent     - this
      * @pCallBack   -  executes, when everything loaded
      */
@@ -93,13 +94,14 @@ var CloudCommander, CloudFunc, $;
         });
     });
     
-    /* function loads data an put it to pSuccess_f
-     * @pA          - link to data
-     * @pSucces_f   - function, thet process data (@data)
+    /**
+     * function loads data an put it to pSuccess_f
+     * @param pA          - link to data
+     * @param pSucces_f   - function, thet process data (@data)
      * 
      * Example: loadData('index.html', function(pData){console.log(pData)});
      */
-    FancyBox.loadData                   = (function(pA, pSuccess_f){
+    FancyBox.loadData                   = function(pA, pSuccess_f){
         Util.Images.showLoad();
         
         var lThis = this;                    
@@ -125,9 +127,9 @@ var CloudCommander, CloudFunc, $;
                 Util.Images.hideLoad();
             }
         });
-    });
+    };
     
-    FancyBox.onDataLoaded               = (function(pData){
+    FancyBox.onDataLoaded               = function(pData){
         var lConfig = FancyBox.getConfig();
         
         /* if we got json - show it */
@@ -135,10 +137,10 @@ var CloudCommander, CloudFunc, $;
             pData = JSON.stringify(pData, null, 4);
             
         $.fancybox('<div id=CloudViewer tabindex=0>' + pData + '</div>', lConfig);
-    });
+    };
     
     
-    FancyBox.set                        = (function(){
+    FancyBox.set                        = function(){
         if(Util.getByClass('fancybox').length)
             return;
         try{
@@ -147,17 +149,15 @@ var CloudCommander, CloudFunc, $;
                 
             /* get all file links */
             var lA = Util.getByTag('a', lPanel);
-            
-            var lThis = this;
-            
+                        
             var lDblClick_f = function(pA){
                 return function(){
-                    var lConfig  = lThis.getConfig();
+                    var lConfig  = FancyBox.getConfig();
                     lConfig.href = pA.href;
                     if(pA.rel)
                         $.fancybox(lConfig);
                     else
-                        lThis.loadData(pA, lThis.onDataLoaded);
+                        FancyBox.loadData(pA, FancyBox.onDataLoaded);
                 };
             };
             
@@ -176,10 +176,13 @@ var CloudCommander, CloudFunc, $;
         }catch(pError){
             console.log(pError);
         }
-    });
+    };
     
     
-    FancyBox.show                       = (function(pCurrentFile){
+    /**
+     * function shows FancyBox
+     */
+    FancyBox.show                       = function(pCurrentFile){
         FancyBox.set();
                 
         var lConfig = this.getConfig();
@@ -199,28 +202,27 @@ var CloudCommander, CloudFunc, $;
         }
         
         Util.Images.hideLoad();
-    });
+    };
     
-    cloudcmd.Viewer.Keys                = (function(pCurrentFile){
-        "use strict";
-                
+    cloudcmd.Viewer.Keys                = function(pCurrentFile){
         var lCallBack_f = (function(){
-            var key_event = (function(pEvent){
+            
+            var lF3 = cloudcmd.KEY.F3;
+            var key_event = function(pEvent){
                 /* если клавиши можно обрабатывать */
                 if( KeyBinding.get() )
-                    if(pEvent.keyCode === cloudcmd.KEY.F3 &&
-                    pEvent.shiftKey){
+                    if(pEvent.keyCode === lF3 && pEvent.shiftKey){
                         var lCurrentFile = Util.getCurrentFile();
                         FancyBox.show(lCurrentFile);
-                    
+                        
                         pEvent.preventDefault();
                     }
-            });
+            };
                
             /* добавляем обработчик клавишь */
             if (document.addEventListener)                
                 document.addEventListener('keydown', key_event, false);
-                
+            
             else{
                 var lFunc;
                 if(typeof document.onkeydown === 'function')
@@ -242,7 +244,7 @@ var CloudCommander, CloudFunc, $;
         Util.jqueryLoad(function(){
             FancyBox.load(FancyBox, lCallBack_f);
         });
-    });
+    };
     
     cloudcmd.Viewer.FancyBox            = FancyBox;
 })();
\ No newline at end of file
diff --git a/lib/server/is-file-changed.js b/lib/server/is-file-changed.js
deleted file mode 100644
index e79fa515..00000000
--- a/lib/server/is-file-changed.js
+++ /dev/null
@@ -1,75 +0,0 @@
-/* Модуль проверяет поменялось ли содержимое файла по хэшу. */
-
-var fs      = require('fs'),
-    crypto  = require('crypto');
-
-/* object contains hashes of files*/
-var Hashes;
-
-/*
- * Function reads hash table of files
- * checks is file changed or not
- * and return result.
- * @pFileName - name of file
- * @pFileData - data of file
- * result: boolean
- */
-exports.check = function(pFileName, pFileData, pOverWrite_b){
-        var lReadedHash;
-        
-        /* boolean hashes.json changed or not */
-        var lHashesChanged_b = false;
-        
-        if(!Hashes)
-            try {
-                console.log('trying  to read hashes.json');
-                Hashes = require(process.cwd() + '/hashes');
-                
-            }catch(pError) {
-                console.log('hashes.json not found... \n');
-                Hashes = {};
-            }
-        
-        for(var lFileName in Hashes)
-            /* if founded row with
-             * file name - save hash
-             */
-            if (lFileName === pFileName) {
-                lReadedHash = Hashes[pFileName];
-                break;
-        }
-        
-        /* create hash of file data */ 
-        var lFileHash = crypto.createHash('sha1');
-        lFileHash = crypto.createHash('sha1'); 
-        lFileHash.update(pFileData);
-        lFileHash = lFileHash.digest('hex');
-                
-        if(lReadedHash !== lFileHash){
-            Hashes[pFileName] = lFileHash;
-            lHashesChanged_b = true;
-        }
-                                
-        if(pOverWrite_b){                                    
-            /* if hashes file was changes - write it */
-            if(lHashesChanged_b)
-                fs.writeFile('./hashes.json',
-                    JSON.stringify(Hashes),
-                    fileWrited('./hashes.json'));
-            else console.log('no one file has been changed');
-        }
-        /* has file changed? */
-        return lHashesChanged_b;
-};
-
-/*
- * Функция вызываеться после записи файла
- * и выводит ошибку или сообщает,
- * что файл успешно записан
- */
-function fileWrited(pFileName){
-    "use strict";
-    return function(error){
-        console.log(error?error:('file '+pFileName+' writed...'));
-    };
-}
\ No newline at end of file