diff --git a/recipes/volksrant.recipe b/recipes/volksrant.recipe
index b3629ee4e0..e5499fed73 100644
--- a/recipes/volksrant.recipe
+++ b/recipes/volksrant.recipe
@@ -9,7 +9,6 @@ __docformat__ = 'restructuredtext en'
  Modified by Tony Stegall
  on 10/10/10 to include function to grab print version of articles
 '''
-
 from datetime import date
 from calibre.web.feeds.news import BasicNewsRecipe
 '''
@@ -42,9 +41,16 @@ class AdvancedUserRecipe1249039563(BasicNewsRecipe):
    #######################################################################################################
     temp_files = []
     articles_are_obfuscated = True
+    use_javascript_to_login = True
+
+    def javascript_login(self, br, username, password):
+        'Volksrant wants the user to explicitly allow cookies'
+        if not br.visit('http://www.volkskrant.nl'):
+            raise Exception('Failed to connect to volksrant website')
+        br.click('#pop_cookie_text a[onclick]', wait_for_load=True, timeout=120)
 
     def get_obfuscated_article(self, url):
-        br = self.get_browser()
+        br = self.browser.clone_browser()
         print 'THE CURRENT URL IS: ', url
         br.open(url)
         year = date.today().year
diff --git a/src/calibre/db/categories.py b/src/calibre/db/categories.py
index b934aec0c1..900f245b36 100644
--- a/src/calibre/db/categories.py
+++ b/src/calibre/db/categories.py
@@ -35,6 +35,8 @@ class Tag(object):
         self.avg_rating = avg/2.0 if avg is not None else 0
         self.sort = sort
         self.use_sort_as_name = use_sort_as_name
+        if tooltip is None:
+            tooltip = '(%s:%s)'%(category, name)
         if self.avg_rating > 0:
             if tooltip:
                 tooltip = tooltip + ': '
@@ -65,7 +67,6 @@ def find_categories(field_metadata):
 def create_tag_class(category, fm, icon_map):
     cat = fm[category]
     icon = None
-    tooltip = None if category in {'formats', 'identifiers'} else ('(' + category + ')')
     label = fm.key_to_label(category)
     if icon_map:
         if not fm.is_custom_field(category):
@@ -87,8 +88,7 @@ def create_tag_class(category, fm, icon_map):
         use_sort_as_name = False
 
     return partial(Tag, use_sort_as_name=use_sort_as_name, icon=icon,
-                        tooltip=tooltip, is_editable=is_editable,
-                        category=category)
+                        is_editable=is_editable, category=category)
 
 def clean_user_categories(dbcache):
     user_cats = dbcache.pref('user_categories', {})
diff --git a/src/calibre/ebooks/oeb/transforms/subset.py b/src/calibre/ebooks/oeb/transforms/subset.py
index 0cca73fcce..3d2ab8d873 100644
--- a/src/calibre/ebooks/oeb/transforms/subset.py
+++ b/src/calibre/ebooks/oeb/transforms/subset.py
@@ -280,7 +280,7 @@ class SubsetFonts(object):
         return ans
 
     def find_usage_in(self, elem, inherited_style):
-        style = self.elem_style(elem.get('class', ''), inherited_style)
+        style = self.elem_style(elem.get('class', '') or '', inherited_style)
         for child in elem:
             self.find_usage_in(child, style)
         font = self.used_font(style)
diff --git a/src/calibre/library/database2.py b/src/calibre/library/database2.py
index 1397d0ca51..754a583f74 100644
--- a/src/calibre/library/database2.py
+++ b/src/calibre/library/database2.py
@@ -1935,8 +1935,6 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
             is_editable = category not in ['news', 'rating', 'languages']
             categories[category] = [tag_class(formatter(r.n), count=r.c, id=r.id,
                                         avg=avgr(r), sort=r.s, icon=icon,
-                                        tooltip=u'({0}:{1})'.format(category,
-                                                                    formatter(r.n)),
                                         category=category,
                                         id_set=r.id_set, is_editable=is_editable,
                                         use_sort_as_name=use_sort_as_name)