Rails ActionView::Helpers::PrototypeHelper::JavaScriptGenerator::GeneratorMethods example

<div id="d1">
 div d1
</div>
<div id="a1">
 a1 will Effect.Fade
</div>
<div id="a2">
 a2 id will be alerted
</div>
<div id="a3">
 a3 content will be replaced by function testCall
</div>
<div id="list">
 <ul>
  <li>1</li>
  <li class="none">2</li>
  <li>3</li>
  <li class="none">4</li>
  <li>5</li>
  <li class="none">6</li>
 </ul>
</div>
<%= javascript_tag "function testCall(id, f){ alert(id); f(); return }" %>
<%= 
update_page_tag do |page|
 page.insert_html 'top', 'd1', '<div>insert top of div d1</div>'
 page.call 'Effect.Fade', 'a1', :duration => 5
 page.call 'testCall', 'a2' do |d|
  d.replace 'a3', :partial => 'replace'
 end
 
 page.select('div[id="list"] ul li.none').each do |item|
  item.hide
 end
end 
%>