diff --git a/app/controllers/issues_controller.rb b/app/controllers/issues_controller.rb
index 0254a6d83..916229cbc 100644
--- a/app/controllers/issues_controller.rb
+++ b/app/controllers/issues_controller.rb
@@ -20,9 +20,9 @@ class IssuesController < ApplicationController
   
   before_filter :find_issue, :only => [:show, :edit, :reply, :destroy_attachment]
   before_filter :find_issues, :only => [:bulk_edit, :move, :destroy]
-  before_filter :find_project, :only => [:new, :update_form, :preview, :gantt, :calendar]
-  before_filter :authorize, :except => [:index, :changes, :preview, :update_form, :context_menu]
-  before_filter :find_optional_project, :only => [:index, :changes]
+  before_filter :find_project, :only => [:new, :update_form, :preview]
+  before_filter :authorize, :except => [:index, :changes, :gantt, :calendar, :preview, :update_form, :context_menu]
+  before_filter :find_optional_project, :only => [:index, :changes, :gantt, :calendar]
   accept_key_auth :index, :changes
 
   helper :journals
@@ -352,7 +352,7 @@ class IssuesController < ApplicationController
     respond_to do |format|
       format.html { render :template => "issues/gantt.rhtml", :layout => !request.xhr? }
       format.png  { send_data(@gantt.to_image, :disposition => 'inline', :type => 'image/png', :filename => "#{@project.identifier}-gantt.png") } if @gantt.respond_to?('to_image')
-      format.pdf  { send_data(render(:template => "issues/gantt.rfpdf", :layout => false), :type => 'application/pdf', :filename => "#{@project.identifier}-gantt.pdf") }
+      format.pdf  { send_data(render(:template => "issues/gantt.rfpdf", :layout => false), :type => 'application/pdf', :filename => "#{@project.nil? ? '' : "#{@project.identifier}-" }gantt.pdf") }
     end
   end
   
@@ -453,9 +453,9 @@ private
   end
   
   def find_optional_project
-    return true unless params[:project_id]
-    @project = Project.find(params[:project_id])
-    authorize
+    @project = Project.find(params[:project_id]) unless params[:project_id].blank?
+    allowed = User.current.allowed_to?({:controller => params[:controller], :action => params[:action]}, @project, :global => true)
+    allowed ? true : deny_access
   rescue ActiveRecord::RecordNotFound
     render_404
   end
diff --git a/app/views/issues/_sidebar.rhtml b/app/views/issues/_sidebar.rhtml
index 1b486966e..788f0b947 100644
--- a/app/views/issues/_sidebar.rhtml
+++ b/app/views/issues/_sidebar.rhtml
@@ -3,16 +3,15 @@
 <% if @project %>
 <%= link_to l(:field_summary), :controller => 'reports', :action => 'issue_report', :id => @project %><br />
 <%= link_to l(:label_change_log), :controller => 'projects', :action => 'changelog', :id => @project %>
-
-<% planning_links = []
-  planning_links << link_to_if_authorized(l(:label_calendar), :action => 'calendar', :project_id => @project)
-  planning_links << link_to_if_authorized(l(:label_gantt), :action => 'gantt', :project_id => @project)
-  planning_links.compact!
-  unless planning_links.empty? %>
-<h3><%= l(:label_planning) %></h3>
-<p><%= planning_links.join(' | ') %></p>
 <% end %>
 
+<% planning_links = []
+  planning_links << link_to(l(:label_calendar), :action => 'calendar', :project_id => @project) if User.current.allowed_to?(:view_calendar, @project, :global => true)
+  planning_links << link_to(l(:label_gantt), :action => 'gantt', :project_id => @project) if User.current.allowed_to?(:view_gantt, @project, :global => true)
+%>
+<% unless planning_links.empty? %>
+<h3><%= l(:label_planning) %></h3>
+<p><%= planning_links.join(' | ') %></p>
 <% end %>
 
 <% unless sidebar_queries.empty? -%>
diff --git a/app/views/issues/gantt.rfpdf b/app/views/issues/gantt.rfpdf
index 692e0d261..be7f31a39 100644
--- a/app/views/issues/gantt.rfpdf
+++ b/app/views/issues/gantt.rfpdf
@@ -1,12 +1,12 @@
 <%
 pdf=IfpdfHelper::IFPDF.new(current_language)
-pdf.SetTitle("#{@project.name} - #{l(:label_gantt)}")
+pdf.SetTitle("#{l(:label_gantt)} #{@project}")
 pdf.AliasNbPages
 pdf.footer_date = format_date(Date.today)
 pdf.AddPage("L")
 pdf.SetFontStyle('B',12)
 pdf.SetX(15)
-pdf.Cell(70, 20, @project.name)
+pdf.Cell(70, 20, @project.to_s)
 pdf.Ln
 pdf.SetFontStyle('B',9)
 
diff --git a/test/functional/issues_controller_test.rb b/test/functional/issues_controller_test.rb
index 6a4775cbd..8bd1af565 100644
--- a/test/functional/issues_controller_test.rb
+++ b/test/functional/issues_controller_test.rb
@@ -155,6 +155,15 @@ class IssuesControllerTest < Test::Unit::TestCase
     assert events.include?(i)
   end
 
+  def test_cross_project_gantt
+    get :gantt
+    assert_response :success
+    assert_template 'gantt.rhtml'
+    assert_not_nil assigns(:gantt)
+    events = assigns(:gantt).events
+    assert_not_nil events
+  end
+
   def test_gantt_export_to_pdf
     get :gantt, :project_id => 1, :format => 'pdf'
     assert_response :success
@@ -162,6 +171,14 @@ class IssuesControllerTest < Test::Unit::TestCase
     assert_equal 'application/pdf', @response.content_type
     assert_not_nil assigns(:gantt)
   end
+
+  def test_cross_project_gantt_export_to_pdf
+    get :gantt, :format => 'pdf'
+    assert_response :success
+    assert_template 'gantt.rfpdf'
+    assert_equal 'application/pdf', @response.content_type
+    assert_not_nil assigns(:gantt)
+  end
   
   if Object.const_defined?(:Magick)
     def test_gantt_image
@@ -180,6 +197,13 @@ class IssuesControllerTest < Test::Unit::TestCase
     assert_not_nil assigns(:calendar)
   end
   
+  def test_cross_project_calendar
+    get :calendar
+    assert_response :success
+    assert_template 'calendar'
+    assert_not_nil assigns(:calendar)
+  end
+  
   def test_changes
     get :changes, :project_id => 1
     assert_response :success