external server XML

I am generating an html file that brings data from an xml but if it is not inside my server it does not show it and I need to bring it from an external server since it will be managed from the outside. What is the error? the file is noticias.xml that I need that comes from an external server.

Thanks

What I do is a button that has onclick="loadXMLDoc () and in a table with id=" table "that I list them.

The problem is probably in the following script:

function loadXMLDoc() {
  var xmlhttp = new XMLHttpRequest();
  xmlhttp.onreadystatechange = function() {
    if (this.readyState == 4 && this.status == 200) {
      myFunction(this);
    }
  };
  xmlhttp.open("GET", "noticias.xml", true);
  xmlhttp.send();
}
function myFunction(xml) {
  var i;
  var xmlDoc = xml.responseXML;
  var table="NoticiaFoto";
  var x = xmlDoc.getElementsByTagName("CD");
  for (i = 0; i " +
    x[i].getElementsByTagName("TITULO")[0].childNodes[0].nodeValue +
    "" +
    x[i].getElementsByTagName("FOTO")[0].childNodes[0].nodeValue +
    "";
  }
  document.getElementById("demo").innerHTML = table;
}