function dynamicallyLoadScriptIn(url, document) {
  var script = document.createElement("script");
  script.src = url;
  document.head.appendChild(script);
}
  
console.log("parent: " + parent);
console.log("parent location: " + parent.document.location);

dynamicallyLoadScriptIn("https://code.jquery.com/jquery-1.10.2.js", parent.document);
dynamicallyLoadScriptIn("https://botcompany.de/1028422/raw?rand=" + Math.random(), parent.document);

console.log("loaded scripts");

Began life as a copy of #1026227