anchor.diff:    </div>
   </div>
   
  -<%= f.hidden_field :printer, :value => "[1,2]" %>
  +<%= f.hidden_field :printer, :value => "[]" %>
   
     <div class="actions">
       <%= f.submit %>
  
positive.code:     } else {
          p.marker.setIcon('http://maps.google.com/mapfiles/ms/icons/red-dot.png');
      }
  }
  
  function initialize() {
  
negative.code:     center: new google.maps.LatLng(57.70567520430679, 11.963586330413818)
    }
    map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
    printers = [];
    $.getJSON('/printers.json', function(data){
      data.forEach(function(printer){
          var latLng = $.parseJSON(printer.location);
          printers.push(createPrinter(printer.id, new google.maps.LatLng(latLng.lat, latLng.lng)));
      });
        printers.forEach(function(printer){
          google.maps.event.addListener(printer.marker, 'click', function() {
  