function get(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.overrideMimeType('text/plain; charset=x-user-defined');

    xhr.onreadystatechange = function(e) {
      if (this.readyState == 4 && this.status == 200) {
            callback(this.responseText);
      }
    };
    xhr.send();
}