// stores the reference to the XMLHttpRequest object
  var request = makeHTR(); 
  
  // retrieves the XMLHttpRequest object
  function makeHTR() 
  {        
    // will store the reference to the XMLHttpRequest object
    var request;
    // if running Internet Explorer
    if(window.XMLHttpRequest)
    {
      try
      {
        request = new XMLHttpRequest();
      }
      catch (e) 
      {
        request = null;
      }
    }
    // if running Mozilla or other browsers
    else
    {
      try 
      {
        request = new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch (e) 
      {
        request = null;
      }
    }
    // return the created object or display an error message
    if (!request)
   
      alert("Error creating the XMLHttpRequest object.");
    else 
      return request;
  }
  
  // make asynchronous HTTP request using the XMLHttpRequest object 
  function sendRequest()
  {        
  // proceed only if the xmlHttp object isn't busy
  if (request.readyState == 4 || request.readyState == 0) {
      //add a variable which changes to workound IE cache issue
      num = Math.round(Math.random()*999999);
          
          request.open("GET", "FeedRead3.php?id="+num, true);  
      // define the method to handle server responses
      request.onreadystatechange = processResults;
      // make the server request
      request.send(null);
    }
    else
      // if the connection is busy, try again after one second  
      setTimeout('sendRequest()', 1000);
  }
  
  // executed automatically when a message is received from the server
  function processResults() 
  {
    // move forward only if the transaction has completed
    if (request.readyState == 4) 
    {
      // status of 200 indicates the transaction completed successfully
      if (request.status == 200) 
      {
  
            // extract the XML retrieved from the server
            var textResponse = request.responseText;
            alert('Updating the Feed');
        document.getElementById('displayResults').innerHTML = textResponse;
                     
            
        // obtain the document element (the root element) of the XML structure
  
        // update the client display using the data received from the server
      } 
      // a HTTP status different than 200 signals an error
      else 
      {
        alert("There was a problem accessing the server: " + request.statusText);
      }
    }
  }