( function(){
// Neues XHR Objekt
function createCORSRequest(method, url) {
  var xhr = new XMLHttpRequest();
  if ("withCredentials" in xhr) {
    // XHR für Chrome/Firefox/Opera/Safari.
    xhr.open(method, url, true);
  } else if (typeof XDomainRequest != "undefined") {
    // XDomainRequest für IE.
    xhr = new XDomainRequest();
    xhr.open(method, url);
  } else {
    // CORS not supported.
    xhr = null;
  }
  return xhr;
}

// der eigentliche Request
function httpGetAsync(theUrl, callback){
    var xhr = createCORSRequest('GET', theUrl);
    if (!xhr) {
    console.log('CORS not supported');
    	return;
  	}
    // Response handlers.
    xhr.onload = function() {
            callback(xhr.responseText);
    }
    xhr.onerror = function() {
    	console.log('Error');
  	};
    xhr.send(null);
}

httpGetAsync('https://www.brn-ag.de/extpub/c/6409d2d1927d3',function(item){
    var container = document.getElementById('brn-6409d2d1927d3');
    container.innerHTML = item;
})
})();