$(document).ready(function() {
  $.ajax({
    url : '/activities',
    data : {
      partial:true,
      size: 'overview',
      activity_lat:activityJSON.activity.latitude,
      activity_lng:activityJSON.activity.longitude,
      limit: 4
    },
    type : 'GET',
    success :function(data){
      $(".near-activities").append(data)
    },
    complete : function(xmlHttpRequest,textStatus){
      $(".near-activities .loader").remove();
    }
  });
});