diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 4f112fd8c..a56371c5f 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -183,21 +183,8 @@ class UsersController < ApplicationController
     @membership = Member.edit_membership(params[:membership_id], params[:membership], @user)
     @membership.save
     respond_to do |format|
-      if @membership.valid?
-        format.html { redirect_to :controller => 'users', :action => 'edit', :id => @user, :tab => 'memberships' }
-        format.js {
-          render(:update) {|page|
-            page.replace_html "tab-content-memberships", :partial => 'users/memberships'
-            page.visual_effect(:highlight, "member-#{@membership.id}")
-          }
-        }
-      else
-        format.js {
-          render(:update) {|page|
-            page.alert(l(:notice_failed_to_save_members, :errors => @membership.errors.full_messages.join(', ')))
-          }
-        }
-      end
+      format.html { redirect_to :controller => 'users', :action => 'edit', :id => @user, :tab => 'memberships' }
+      format.js
     end
   end
 
@@ -208,7 +195,7 @@ class UsersController < ApplicationController
     end
     respond_to do |format|
       format.html { redirect_to :controller => 'users', :action => 'edit', :id => @user, :tab => 'memberships' }
-      format.js { render(:update) {|page| page.replace_html "tab-content-memberships", :partial => 'users/memberships'} }
+      format.js
     end
   end
 
diff --git a/app/views/users/destroy_membership.js.erb b/app/views/users/destroy_membership.js.erb
new file mode 100644
index 000000000..af06d5bed
--- /dev/null
+++ b/app/views/users/destroy_membership.js.erb
@@ -0,0 +1 @@
+Element.update('tab-content-memberships', '<%= escape_javascript(render :partial => 'users/memberships') %>');
diff --git a/app/views/users/edit_membership.js.erb b/app/views/users/edit_membership.js.erb
new file mode 100644
index 000000000..ee33799e5
--- /dev/null
+++ b/app/views/users/edit_membership.js.erb
@@ -0,0 +1,6 @@
+<% if @membership.valid? %>
+  Element.update("tab-content-memberships", '<%= escape_javascript(render :partial => 'users/memberships') %>');
+  new Effect.Highlight("member-<%= @membership.id %>")
+<% else %>
+  alert('<%= escape_javascript l(:notice_failed_to_save_members, :errors => @membership.errors.full_messages.join(', ')) %>');
+<% end %>
diff --git a/test/functional/users_controller_test.rb b/test/functional/users_controller_test.rb
index 27f725dc2..3d4f08487 100644
--- a/test/functional/users_controller_test.rb
+++ b/test/functional/users_controller_test.rb
@@ -363,38 +363,45 @@ class UsersControllerTest < ActionController::TestCase
   def test_create_membership_js_format
     assert_difference 'Member.count' do
       post :edit_membership, :id => 7, :membership => {:project_id => 3, :role_ids => [2]}, :format => 'js'
+      assert_response :success
+      assert_template 'edit_membership'
+      assert_equal 'text/javascript', response.content_type
     end
-    assert_response :success
-    assert_select_rjs :replace_html, 'tab-content-memberships'
     member = Member.first(:order => 'id DESC')
     assert_equal User.find(7), member.principal
     assert_equal [2], member.role_ids
     assert_equal 3, member.project_id
+    assert_include 'tab-content-memberships', response.body
   end
 
   def test_create_membership_js_format_with_failure
     assert_no_difference 'Member.count' do
       post :edit_membership, :id => 7, :membership => {:project_id => 3}, :format => 'js'
+      assert_response :success
+      assert_template 'edit_membership'
+      assert_equal 'text/javascript', response.content_type
     end
-    assert_response :success
-    assert @response.body.match(/alert/i), "Alert message not sent"
-    assert @response.body.match(/role can't be empty/i), "Error message not sent"
+    assert_include 'alert', response.body, "Alert message not sent"
+    assert_include 'Role can\\\'t be empty', response.body, "Error message not sent"
   end
 
   def test_update_membership
     assert_no_difference 'Member.count' do
       put :edit_membership, :id => 2, :membership_id => 1, :membership => { :role_ids => [2]}
+      assert_redirected_to :action => 'edit', :id => '2', :tab => 'memberships'
     end
-    assert_redirected_to :action => 'edit', :id => '2', :tab => 'memberships'
     assert_equal [2], Member.find(1).role_ids
   end
 
   def test_update_membership_js_format
     assert_no_difference 'Member.count' do
       put :edit_membership, :id => 2, :membership_id => 1, :membership => {:role_ids => [2]}, :format => 'js'
+      assert_response :success
+      assert_template 'edit_membership'
+      assert_equal 'text/javascript', response.content_type
     end
-    assert_response :success
-    assert_select_rjs :replace_html, 'tab-content-memberships'
+    assert_equal [2], Member.find(1).role_ids
+    assert_include 'tab-content-memberships', response.body
   end
 
   def test_destroy_membership
@@ -408,8 +415,11 @@ class UsersControllerTest < ActionController::TestCase
   def test_destroy_membership_js_format
     assert_difference 'Member.count', -1 do
       delete :destroy_membership, :id => 2, :membership_id => 1, :format => 'js'
+      assert_response :success
+      assert_template 'destroy_membership'
+      assert_equal 'text/javascript', response.content_type
     end
-    assert_response :success
-    assert_select_rjs :replace_html, 'tab-content-memberships'
+    assert_nil Member.find_by_id(1)
+    assert_include 'tab-content-memberships', response.body
   end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index c4c956953..fb0ba77ad 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -160,8 +160,8 @@ class ActiveSupport::TestCase
     assert_tag({:attributes => { :id => 'errorExplanation' }}.merge(options))
   end
 
-  def assert_include(expected, s)
-    assert s.include?(expected), "\"#{expected}\" not found in \"#{s}\""
+  def assert_include(expected, s, message=nil)
+    assert s.include?(expected), (message || "\"#{expected}\" not found in \"#{s}\"")
   end
 
   def assert_not_include(expected, s)