<script language="javascript" type="text/javascript">
  file="http://1.1.1.1/mysite/files/test.html"
  var rawFile = new XMLHttpRequest();
  rawFile.open("GET", file, false);
  rawFile.onreadystatechange = function ()
  {
    if(rawFile.readyState === 4)
    {
      if(rawFile.status === 200 || rawFile.status == 0)
      {
        var allText = rawFile.responseText;
        document.getElementById("content_file").innerHTML=allText;
      }
    }
  }
  rawFile.send(null);
</script>