anchor.diff:    </head>
     <body>
       <% if @visualization.public? %>
  -      <div class="cartodb-new-header"><div>
         <div id="map"></div>
         <div id="not_supported_dialog" style="display: none">
           <h2>CartoDB</h2>
  
positive.code: 
          cartodb.config.set({
            cartodb_attributions: "CartoDB <a href='http://cartodb.com/attributions?utm_source=Footer_Link&utm_medium=referral&utm_campaign=Embed_v1&utm_content=Attributions&utm_term=<%= @visualization.user.username %>' target='_blank'>attribution</a>",
            cartodb_logo_link: "http://www.cartodb.com?utm_source=Footer_Link&utm_medium=referral&utm_campaign=Embed_v1&utm_content=Logo",
          })
  
          cartodb.createVis('map', <%=raw @visualization.to_vizjson.to_json %>, opt, function(vis) {
            // add here your code
            window.vis = vis;
          }).on('error', manageError);
        });
  
  
negative.code: 
      <% if !Rails.env.production? %>
        <%= stylesheet_link_tag 'cdb/themes/css/cartodb' %>
      <% else %>
       <% if request.protocol == 'https://' %>
          <link rel="stylesheet" href="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/themes/css/cartodb.css" />
       <% else %>
          <link rel="stylesheet" href="http://libs.cartocdn.com/cartodb.js/v3/themes/css/cartodb.css" />
       <% end %>
  
      <% end %>
  