Index: app/helpers/issues_helper.rb
===================================================================
--- app/helpers/issues_helper.rb	(revision 15148)
+++ app/helpers/issues_helper.rb	(working copy)
@@ -511,4 +511,11 @@
       end
     end
   end
+
+  def issue_history_tabs
+    tabs = [
+      {:name => 'all', :action => :edit_project, :partial => 'issues/history/all', :label => :label_issue_history_all},
+      {:name => 'notes', :action => :index, :partial => 'issues/history/notes', :label => :label_issue_history_notes}
+    ]
+  end
 end
Index: app/views/issues/history/_all.html.erb
===================================================================
--- app/views/issues/history/_all.html.erb	(revision 0)
+++ app/views/issues/history/_all.html.erb	(working copy)
@@ -0,0 +1,5 @@
+<script>
+$('#history #tab-all').on('click', function() {
+  $('.journal:not(.has-notes), .journal>.details').slideDown('fast');
+});
+</script>
Index: app/views/issues/history/_notes.html.erb
===================================================================
--- app/views/issues/history/_notes.html.erb	(revision 0)
+++ app/views/issues/history/_notes.html.erb	(working copy)
@@ -0,0 +1,5 @@
+<script>
+$('#history #tab-notes').on('click', function() {
+  $('.journal:not(.has-notes), .journal>.details').slideUp('fast');
+});
+</script>
Index: app/views/issues/show.html.erb
===================================================================
--- app/views/issues/show.html.erb	(revision 15148)
+++ app/views/issues/show.html.erb	(working copy)
@@ -121,6 +121,7 @@
 <% if @journals.present? %>
 <div id="history">
 <h3><%=l(:label_history)%></h3>
+<%= render_tabs issue_history_tabs %>
 <%= render :partial => 'history', :locals => { :issue => @issue, :journals => @journals } %>
 </div>
 <% end %>
Index: config/locales/en.yml
===================================================================
--- config/locales/en.yml	(revision 15148)
+++ config/locales/en.yml	(working copy)
@@ -988,6 +988,8 @@
   label_api: API
   label_field_format_enumeration: Key/value list
   label_default_values_for_new_users: Default values for new users
+  label_issue_history_all: All
+  label_issue_history_notes: Notes
 
   button_login: Login
   button_submit: Submit
Index: config/routes.rb
===================================================================
--- config/routes.rb	(revision 15148)
+++ config/routes.rb	(working copy)
@@ -48,6 +48,7 @@
   match '/issues/context_menu', :to => 'context_menus#issues', :as => 'issues_context_menu', :via => [:get, :post]
   match '/issues/changes', :to => 'journals#index', :as => 'issue_changes', :via => :get
   match '/issues/:id/quoted', :to => 'journals#new', :id => /\d+/, :via => :post, :as => 'quoted_issue'
+  get '/issues/:id/:tab', :to => 'issues#show'
 
   resources :journals, :only => [:edit, :update] do
     member do
@@ -154,7 +155,7 @@
         end
       end
     end
-  
+
     match 'wiki/index', :controller => 'wiki', :action => 'index', :via => :get
     resources :wiki, :except => [:index, :new, :create], :as => 'wiki_page' do
       member do