var obj {};
var storedObject;
var randomResponse1 = pickRand1(obj);
var randomResponse2 = pickRand1(obj);

  //first visit to server
if (event.reply == "true") {
    obj.1 = 'one';
    obj = storedObject;
 }

 //second visit to server
 if (event.reply == "true") {
    obj.2 = 'two';
    obj = storedObject;
  }


 //third visit to server
 if (event.reply == "true") {
    obj.3 = 'three';
    obj = storedObject;
  }


 //fourth visit to server
 if (event.reply == "true") {
    obj.4 = 'four';
    obj = storedObject;
  }


 //final visit to server
 if (event.reply == "true") {
    alert(randomResponse1); //it only seems to grab last value
    alert(randomResponse2); //also, does this have a chance of
                                    //being the same random result?
  }


  function pickRand1(obj) {
    var result;
    var count = 0;
      for (var prop in obj)
      if (Math.random() < 1/++count)
         result = obj[prop];
    return result;
  }