diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 1814e81..49331b7 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -76,5 +76,39 @@ module ApplicationHelper
     end
   end
 
+  # Displays context help. Pass the content of the help message in the block
+  # passed to this method. Example:
+  #
+  #  <% help do %>
+  #    This is the help message to be displayed. It can contain any HTML you
+  #    want: <strong>bold</strong>, <em>italic</em>, and even
+  #    <%= link_to '', 'links' %> using Rails helpers.
+  #  <% end %>
+  #
+  # You can also pass an optional argument to force the use of textile in your
+  # help message:
+  #
+  #  <% help :textile do %>
+  #    You can also use *textile*!
+  #  <% end %>
+  #
+  # Formally, the <tt>type</tt> argument can be <tt>:html</tt> or
+  # <tt>:textile</tt>. It defaults to <tt>:html</tt>.
+  #
+  # TODO: implement correcly the 'Help' button click
+  def help(type = :html, &block)
+    content = capture(&block)
+    if type == :textile
+      content = RedCloth.new(content).to_html
+    end
+    button = link_to_function(_('Help'), "alert('change me, Leandro!')")
+    concat(content_tag('div', button + content_tag('div', content, :class => 'help_message'), :class => 'help_box'), block.binding)
+  end
+
+  # alias for <tt>help(:textile)</tt>. Pass a block in the same way you would
+  # do if you called <tt>help</tt> directly.
+  def help_textile(&block)
+    help(:textile, &block)
+  end
 
 end
diff --git a/test/functional/application_controller_test.rb b/test/functional/application_controller_test.rb
index 0bfc34f..5e19e64 100644
--- a/test/functional/application_controller_test.rb
+++ b/test/functional/application_controller_test.rb
@@ -53,4 +53,33 @@ class ApplicationControllerTest < Test::Unit::TestCase
     assert_not_nil assigns(:chosen_icons_theme)
   end
 
+  def test_should_generate_help_box
+    get :help
+    assert_tag({
+      :tag => 'div',
+      :attributes => { :class => 'help_box'},
+      :descendant => {
+        :tag => 'div',
+        :content => /my_help_message/,
+        :attributes => { :class => 'help_message'}
+      }
+    })
+  end
+
+  def test_should_generate_help_box_expanding_textile_markup
+    get :help_textile
+    assert_tag({
+      :tag => 'div',
+      :attributes => { :class => 'help_box'},
+      :descendant => {
+        :tag => 'div',
+        :attributes => { :class => 'help_message'},
+        :descendant => {
+          :tag => 'strong',
+          :content => /my_bold_help_message/
+        }
+      }
+    })
+  end
+
 end
diff --git a/test/mocks/test/test_controller.rb b/test/mocks/test/test_controller.rb
index 4f5fd57..f9a41cb 100644
--- a/test/mocks/test/test_controller.rb
+++ b/test/mocks/test/test_controller.rb
@@ -7,4 +7,13 @@ class TestController < ApplicationController
   def post_only
     render :text => '<span>post_only</span>'
   end
+
+  def help
+    render :inline => '<% help { %> my_help_message <% } %>'
+  end
+
+  def help_textile
+    render :inline => '<% help_textile { %> *my_bold_help_message* <% } %>'
+  end
+
 end
--
libgit2 0.21.2