text: var elem = document.createElement("script");
  var code = document.createTextNode(
    canvasFingerprinting + "\r\n" +
    bootstrap + "\r\n" +
    "bootstrap();"
  );
  elem.appendChild(code);
  var node = (document.documentElement || document.head || document.body);
  node.insertBefore(elem, node.firstChild);
  
  function bootstrap() {
    canvasFingerprinting();
  }
  