Redmine/app/views/journals/_notes_form.html.erb

<% form_remote_tag(:url => {}, :html => { :id => "journal-#{@journal.id}-form" }) do %>
    <%= text_area_tag :notes, @journal.notes,
          :id => "journal_#{@journal.id}_notes",
          :class => 'wiki-edit', 
          :rows => (@journal.notes.blank? ? 10 : [[10, @journal.notes.length / 50].max, 100].min) %>
    <%= call_hook(:view_journals_notes_form_after_notes, { :journal => @journal}) %>
    <p><%= submit_tag l(:button_save) %>
    <%= link_to_remote l(:label_preview), 
                       { :url => preview_issue_path(:project_id => @project, :id => @journal.issue),
                         :method => 'post',
                         :update => "journal_#{@journal.id}_preview",
                         :with => "Form.serialize('journal-#{@journal.id}-form')",
                         :complete => "Element.scrollTo('journal_#{@journal.id}_preview')"
                       }, :accesskey => accesskey(:preview) %>
    |
    <%= link_to l(:button_cancel), '#', :onclick => "Element.remove('journal-#{@journal.id}-form'); " +
                                                    "Element.show('journal-#{@journal.id}-notes'); return false;" %></p>

    <div id="journal_<%= @journal.id %>_preview" class="wiki"></div>
<% end %>
<%= wikitoolbar_for "journal_#{@journal.id}_notes" %>