diff --git a/cps/gdriveutils.py b/cps/gdriveutils.py
index f1af97bf..b26f24d0 100644
--- a/cps/gdriveutils.py
+++ b/cps/gdriveutils.py
@@ -103,7 +103,7 @@ def getEbooksFolderId(drive=None):
         gDriveId.path='/'
         session.merge(gDriveId)
         session.commit()
-        return 
+        return
 
 def getFolderInFolder(parentId, folderName, drive=None):
     if not drive:
@@ -112,7 +112,7 @@ def getFolderInFolder(parentId, folderName, drive=None):
         drive.auth.Refresh()
     folder= "title = '%s' and '%s' in parents and mimeType = 'application/vnd.google-apps.folder' and trashed = false"  % (folderName.replace("'", "\\'"), parentId)
     fileList = drive.ListFile({'q': folder}).GetList()
-    return fileList[0]    
+    return fileList[0]
 
 def getFile(pathId, fileName, drive=None):
     if not drive:
@@ -168,7 +168,7 @@ def getFileFromEbooksFolder(drive, path, fileName):
         folderId=getFolderId(path, drive)
     else:
         folderId=getEbooksFolderId(drive)
-    
+
     return getFile(folderId, fileName, drive)
 
 def copyDriveFileRemote(drive, origin_file_id, copy_title):
@@ -221,7 +221,7 @@ def copyToDrive(drive, uploadFile, createRoot, replaceFiles,
     if os.path.isdir(os.path.join(prevDir,uploadFile)):
         existingFolder=drive.ListFile({'q' : "title = '%s' and '%s' in parents and trashed = false" % (os.path.basename(uploadFile), parent['id'])}).GetList()
         if len(existingFolder) == 0 and (not isInitial or createRoot):
-            parent = drive.CreateFile({'title': os.path.basename(uploadFile), 'parents' : [{"kind": "drive#fileLink", 'id' : parent['id']}], 
+            parent = drive.CreateFile({'title': os.path.basename(uploadFile), 'parents' : [{"kind": "drive#fileLink", 'id' : parent['id']}],
                 "mimeType": "application/vnd.google-apps.folder" })
             parent.Upload()
         else:
@@ -259,7 +259,7 @@ def uploadFileToEbooksFolder(drive, destFile, f):
         else:
             existingFolder=drive.ListFile({'q' : "title = '%s' and '%s' in parents and trashed = false" % (x, parent['id'])}).GetList()
             if len(existingFolder) == 0:
-                parent = drive.CreateFile({'title': x, 'parents' : [{"kind": "drive#fileLink", 'id' : parent['id']}], 
+                parent = drive.CreateFile({'title': x, 'parents' : [{"kind": "drive#fileLink", 'id' : parent['id']}],
                     "mimeType": "application/vnd.google-apps.folder" })
                 parent.Upload()
             else:
@@ -341,7 +341,7 @@ def stopChannel(drive, channel_id, resource_id):
     if not drive:
         drive=getDrive()
     if drive.auth.access_token_expired:
-        drive.auth.Refresh() 
+        drive.auth.Refresh()
     # service=drive.auth.service
     body = {
     'id': channel_id,
@@ -363,5 +363,5 @@ def getChangeById (drive, change_id):
         change = drive.auth.service.changes().get(changeId=change_id).execute()
         return change
     except errors.HttpError, error:
-        web.app.logger.exception(error) 
+        web.app.logger.exception(error)
         return None
diff --git a/cps/helper.py b/cps/helper.py
index c4cdf03f..5cf64372 100755
--- a/cps/helper.py
+++ b/cps/helper.py
@@ -366,6 +366,7 @@ class Updater(threading.Thread):
     def one_minus_two(self, one, two):
         return [x for x in one if x not in set(two)]
 
+    @classmethod
     def reduce_dirs(self, delete_files, new_list):
         new_delete = []
         for file in delete_files:
diff --git a/cps/static/js/get_meta.js b/cps/static/js/get_meta.js
index 80543516..99fce061 100644
--- a/cps/static/js/get_meta.js
+++ b/cps/static/js/get_meta.js
@@ -141,7 +141,7 @@ $(document).ready(function () {
     function dbSearchBook (title) {
         var url = douban + dbSearch + "?q=" + title + "&fields=all&count=10";
         $.ajax({
-            url: url,
+            url,
             type: "GET",
             dataType: "jsonp",
             jsonp: "callback",
@@ -149,7 +149,7 @@ $(document).ready(function () {
                 dbResults = data.books;
             },
             error () {
-                $("#meta-info").html('<p class="text-danger">'+ msg.search_error+"!</p>");
+                $("#meta-info").html("<p class=\"text-danger\">"+ msg.search_error+"!</p>");
             },
             complete () {
                 dbDone = true;
diff --git a/cps/web.py b/cps/web.py
index 3b3597e9..592240c1 100755
--- a/cps/web.py
+++ b/cps/web.py
@@ -484,7 +484,7 @@ def fill_indexpage(page, database, db_filter, order):
     return entries, random, pagination
 
 
-def modify_database_object(input_elements, db_book_object, db_object, db_session, type):
+def modify_database_object(input_elements, db_book_object, db_object, db_session, db_type):
     input_elements = [x for x in input_elements if x != '']
     # we have all input element (authors, series, tags) names now
     # 1. search for elements to remove
@@ -516,7 +516,7 @@ def modify_database_object(input_elements, db_book_object, db_object, db_session
                 db_session.delete(del_element)
     # if there are elements to add, we add them now!
     if len(add_elements) > 0:
-        if type == 'languages':
+        if db_type == 'languages':
             db_filter = db_object.lang_code
         else:
             db_filter = db_object.name
@@ -525,12 +525,12 @@ def modify_database_object(input_elements, db_book_object, db_object, db_session
             new_element = db_session.query(db_object).filter(db_filter == add_element).first()
             # if no element is found add it
             if new_element is None:
-                if type == 'author':
+                if db_type == 'author':
                     new_element = db_object(add_element, add_element, "")
                 else:
-                    if type == 'series':
+                    if db_type == 'series':
                         new_element = db_object(add_element, add_element)
-                    else:  # type should be tag, or languages
+                    else:  # db_type should be tag, or languages
                         new_element = db_object(add_element)
                 db_session.add(new_element)
                 new_element = db.session.query(db_object).filter(db_filter == add_element).first()