text: Promise.request = function(url) {
  	var result = new Promise();
  
  	var xhr = new XMLHttpRequest();
  
  	var eventHandler = {
  		handleEvent: function(e) {
  			if (e.target.readyState != 4) { return; }
  			xhr.removeEventListener("readystatechange", eventHandler);
  
  			if (e.target.status == 200) {
  				result.fulfill(e.target.responseText);
  			} else {
  				result.reject(e.target.responseText);
  			}
  		}
  	}
  
  	xhr.open("get", url, true);
  	xhr.addEventListener("readystatechange", eventHandler);
  	xhr.send();
  
  	return result;
  }
  