anchor.diff:      <script id="infowindow_template" type="text/tmpl">
         <div class="cartodb-popup">
           <div class="cartodb-popup-content-wrapper">
  -          <div class="cartodb-popup-content"> 
  -            {{#content.fields}} 
  +          <div class="cartodb-popup-content">
  +            {{#content.fields}}
               {{#title}}<h4>{{title}}</h4>{{/title}}
               <p>{{value}}</p> {{/content.fields}}
             </div>
  -        </div> 
  -        <div class="cartodb-popup-tip-container"> 
  -        </div> 
  +        </div>
  +        <div class="cartodb-popup-tip-container">
  +        </div>
         </div>
       </script>
   
  
positive.code:       return params;
      }
  
      var vis_data = {
         title: table_name,
         description: table_description,
         center: [0, 0],
         zoom: 4,
  
         overlays: [
          {
            type: 'header'
          },
          { 
            type: 'zoom',
            template: '<a class="zoom_in">+</a> <a class="zoom_out">-</a>'
          }
  
negative.code: 
        layers: [
          base_layer_tilejson,
          data_layer_tilejson
        ]
      };
  
      if(opt.title === 'true' || opt.description === 'true') {
        vis_data.overlays.splice(0, 0, { type: 'header' });
      }
  
      vis_data.bounds = [
        [opt.sw_lat, opt.sw_lon],
        [opt.ne_lat, opt.ne_lon],
      ];
  
      if(opt.sql) {
        data_layer_tilejson.query = opt.sql;
  