[рони]

lloudb,

<div class="game">
    <form method="post" action=""  onsubmit="return false">
      <input type="text" value="Ваш ID">
    <div class="window" id="box">
      <img src="https://pp.vk.me/c604717/v604717837/24ad8/3PnLL6GVrGM.jpg" name="myImage" id="id" width="200" height="200">
    </div>
    <input type="submit" onClick="add()" value="Начать" />
    </form>
  </div>
 <script>
     function add() {
  var z = document.getElementById("id");
  var image = [];
  image[0]="https://pp.vk.me/c604717/v604717837/24af2/Mkohs4O1jF0.jpg";
  image[1]="https://pp.vk.me/c604717/v604717837/24ae5/tpfMG1ClZXY.jpg";
  z.src = image[1];
}

 </script>