Adds a helper for preview links.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@10031 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/news/edit.html.erb

@@ -3,12 +3,7 @@
 <%= labelled_form_for @news, :html => { :id => 'news-form', :multipart => true, :method => :put } do |f| %>
 <%= render :partial => 'form', :locals => { :f => f } %>
 <%= submit_tag l(:button_save) %>
-<%= link_to_remote l(:label_preview),
-                   { :url => preview_news_path(:project_id => @project),
-                     :method => 'get',
-                     :update => 'preview',
-                     :with => "Form.serialize('news-form')"
-                   }, :accesskey => accesskey(:preview) %>
+<%= preview_link preview_news_path(:project_id => @project), 'news-form' %>
 <% end %>
 <div id="preview" class="wiki"></div>