diff --git a/javascript/CMSMain_upload.js b/javascript/CMSMain_upload.js
index e9829bdd..05622e5a 100644
--- a/javascript/CMSMain_upload.js
+++ b/javascript/CMSMain_upload.js
@@ -1,5 +1,7 @@
 /**
- * If one of methods is not commented look for comment in Upload.js 
+ * This class is used for upload in asset part.
+ * If one of methods is not commented look for comment in Upload.js
+  
 */
 CMSMain_upload = Class.create();
 CMSMain_upload.prototype = {
diff --git a/javascript/TinyMCEImageEnhancement.js b/javascript/TinyMCEImageEnhancement.js
index f7f8295d..12d4df1c 100644
--- a/javascript/TinyMCEImageEnhancement.js
+++ b/javascript/TinyMCEImageEnhancement.js
@@ -1,4 +1,5 @@
 /**
+ * This class is used for upload in TinyMCE editor.
  * If one of methods is not commented look for comment in Upload.js.
 */
 TinyMCEImageEnhancement = Class.create();
diff --git a/javascript/Upload.js b/javascript/Upload.js
index 7d77772a..cccfdd51 100644
--- a/javascript/Upload.js
+++ b/javascript/Upload.js
@@ -1,3 +1,10 @@
+/*
+    This class is wrapper for SWFUpload class. 
+    If you want use SWFUpload, please use this class becuase it will take care of configuration
+    error handling and other things.
+
+*/
+
 Upload = Class.create();
 Upload.prototype = {