(function() {

  window.main = function() {
    /* get a reference to the Log DOM node
    */
    var log, source;
    log = document.getElementById('log');
    console.log('Opening connection...');
    source = new EventSource('http://wafi.iit.cnr.it/webvis/examples/server_sent_events/sender.php');
    source.onopen = function() {
      return console.log('...done.');
    };
    source.addEventListener('ping', (function(e) {
      /* callback for the 'ping' event
      */
      var newElement, obj;
      obj = JSON.parse(e.data);
      newElement = document.createElement('li');
      newElement.innerHTML = "ping at " + obj.time;
      return log.insertBefore(newElement, log.firstChild);
    }), false);
    return source.onerror = function(e) {
      return alert('EventSource failed!');
    };
  };

}).call(this);