diff --git a/lib/client/keyBinding.js b/lib/client/keyBinding.js
index dd11dfb9..69b9c187 100644
--- a/lib/client/keyBinding.js
+++ b/lib/client/keyBinding.js
@@ -54,10 +54,15 @@ CloudCommander.keyBinding=(function(){
                     }catch(error){console.log(error);}                    
                 }                
                 /* if f3 pressed */
-                 else   if(event.keyCode===114){
-                     if (typeof CloudCommander.Viewer === 'function'){
+                 else if(event.keyCode===114){
+                     if (typeof CloudCommander.Viewer === 'function')
                         CloudCommander.Viewer();                        
-                     }
+                 }
+                
+                 /* if f4 pressed */ 
+                 else if(event.keyCode === 115) {
+                     if (typeof CloudCommander.Editor === 'function')
+                        CloudCommander.Editor();
                  }
                 /* навигация по таблице файлов*/
                 /* если нажали клавишу вверх*/