anchor.diff:      url: "<%= url  %>" , 
       data: {
         error: "unsupported browser", 
  -      "authenticity_token": $("#authenticity_token").val()
  +      authenticity_token: $("#authenticity_token").val()
         }
       });
   }
  
positive.code:         url: "<%= url  %>" , 
          data: {
            error: errorMessage,
            "authenticity_token": $("#authenticity_token").val()
            }
          });
  
  
negative.code:         data: {
            lat: lat,
            lng: lng,
            authenticity_token: $("#authenticity_token").val()
            }
          });
  
  