anchor.diff:  <html>
  -
   <head>
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
     <meta name="author" content="Tim Lossen" />
  -	<meta name="description" content="realtime charts of amazon ec2 spot prices" />
  -	<meta name="keywords" content="amazon, aws, ec2, spot price, pricing, charts, visualization, cloud computing" />
  -	<meta name="robots" content="all">
  +  <meta name="description" content="realtime charts of amazon ec2 spot prices" />
  +  <meta name="keywords" content="amazon, aws, ec2, spot price, pricing, charts, visualization, cloud computing" />
  +  <meta name="robots" content="all">
     <title><%= @which %> &mdash; cloud exchange</title>
     <link rel="stylesheet" href="/css/reset.css" />
     <link rel="stylesheet" href="/css/text.css" />
     <link rel="stylesheet" href="/css/960.css" />
  +  <link rel="icon" type="image/ico" href="/favicon.ico"/>
  +  <link rel="shortcut icon" type="image/ico" href="/favicon.ico"/>
  +
     <style>
       a { text-decoration: none; }
       a:hover { text-decoration: underline; }
  
positive.code:         <strong>You need to upgrade your Flash Player</strong>
        </div>
  
      	<script type="text/javascript">
      		var so = new SWFObject("/amstock/amstock.swf", "amstock", "620", "400", "8", "#FFFFFF");
      		so.addVariable("path", "/data/");
      		so.addVariable("settings_file", encodeURIComponent("/amstock/settings.xml"));
      		so.addVariable("preloader_color", "#999999");
      		so.addVariable("additional_chart_settings", "<settings><data_sets><data_set did='0'><file_name><%= @which %>.csv</file_name></data_set></data_sets></settings>");
      		so.write("flashcontent");
      	</script>
      	
      	<p>
    	    <a href="/data/<%= @which %>.csv">download data</a>
    	  </p>
    	</div>
   
      <% @regions.each do |region| %>
     	  <div class="grid_1 navigation">
        <p><%= region %></p>
        <% @systems.each do |system| %>
          <p>
          <% @instances.each do |instance| %>
            <% which = "#{region}.#{system}.#{instance}" %>
            <a href="/charts/<%= which %>.html"><%= instance %></a><br>
          <% end %>
          </p>
        <% end %>
        </div>
      <% end %>
  
   	  <div class="grid_1 navigation">
        <p>&nbsp;</p>
        <p>linux<br><br><br><br><br><br><br></p>
        <p>windows</p>
      </div>
      
      <div class="clear"></div>
   
    	<div class="grid_8 footer">
        visualization: <a href="http://www.timlossen.com">tim lossen</a>
        &mdash; 
        data: <a href="http://aws.amazon.com/">amazon web services</a> 
        <br>
    	  <i><sup>*</sup> times shown are <a href="http://en.wikipedia.org/wiki/UTC">UTC</a> (= london)</i>
    	</div>
  
    </div>
    
    <div class="invisible">
  	  <a href="/favicon.ico">.</a>
  	  <a href="/amstock/amstock.swf">.</a>
  	  <a href="/amstock/settings.xml">.</a>
  	</div>
  	
    <script type="text/javascript">
      var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
  
negative.code: <body>  
    <div class="container_12">
  
      <div class="grid_12">
        <h1>cloud exchange</h1>     
        <!--# block name="empty" --><!--# endblock -->
        <h2><%= @which %> &mdash; $<!--# include virtual="/data/<%= @which %>.txt" stub="empty" --></h2>
      </div>
  
      <div class="clear"></div>
  
    	<div class="grid_8">
        <script type="text/javascript" src="/amstock/swfobject.js"></script>
  