Verificación

<html style="min-height: 100%; height: 100%;">
<head>
  <script>
    var form;
    var verId;
    var btn;
    window.addEventListener("DOMContentLoaded", init, false);
    function init() {
      verId = document.getElementById("verificationId");
      btnFrm = document.getElementById("verifyFrame");
      btnWnd = document.getElementById("verifyWindow");
      btnFrm.addEventListener("click", verifyFrame, false);
      btnWnd.addEventListener("click", verifyWindow, false);
      window.addEventListener("message", receiveMessage, false);
    }
    function receiveMessage(event) {
      console.log(event.data);
      alert("isError: " + event.data.isError + "\nEvent: " + event.data.eventName);
    }
    function getUrl(id) {
      return "https://cloud-us.flexicapture.com/verification/" + verId.value;
    }
    function verifyWindow(evt) {
      evt.preventDefault();
      if (!verId.value) return alert("Verification id must be provided!");
      window.open(getUrl(), '_blank')
    }
    function verifyFrame(evt) {
      evt.preventDefault();
      if (!verId.value) return alert("Verification id must be provided!");
      var iframe = document.createElement("iframe");
      iframe.src = getUrl();
      iframe.style.width = "100%";
      iframe.style.height = "95%";
      try {
        document.getElementById("main").removeChild(document.querySelector("iframe"));
      } catch (e) { }
      document.getElementById("main").appendChild(iframe);
    }
  </script>
</head>
<body
  style="background-color: #999999; min-height: 100%; height: 100%; position: relative; margin: 0; padding: 0; background: linear-gradient(to bottom right, #4380bc, #5ba484);">
  <div id="main"
    style="height: 100%; position: relative; padding:20px; -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box;">
    <form id="verifyForm">
      <input id="verificationId" placeholder="verification id" style="width: 250px;" />
      <button id="verifyFrame">Verify in frame</button>
      <button id="verifyWindow">Verify in window</button>
    </form>
  </div>
</body>
</html>