text: //Get the build date!
  let PG = null;
  let lastUpdateTime = 0;
  
  // Auto refresh on new version
  let http = new XMLHttpRequest();
  let url = "/PuzzleCylinder";
  http.open("GET", url, true);
  
  //Send the proper header information along with the request
  http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  
  http.onreadystatechange = function() {//Call a function when the state changes.
  	if(http.readyState == 4 && http.status == 200) {
  		lastUpdateTime = http.responseText;
  		PG = new PuzzleGame();
  	}
  };
  http.send(null);