function createRequestObject(){

  var req;

  try
  {
    // Firefox, Opera, Safari
    req = new XMLHttpRequest();
  }

  catch (e)
  {
    // Internet Explorer
    try
    {
      //For IE 6
      req = new ActiveXObject("Msxml2.XMLHTTP");
    }

    catch (e)
    {
      try
      {
        //For IE 5
        req = new ActiveXObject("Microsoft.XMLHTTP");
      }

      catch (e)
      {
        alert('Your browser is not IE 5 or higher, or Firefox or Safari or Opera');
      }
    }
  }

  return req;
}

//Make the XMLHttpRequest Object
var http = createRequestObject();

function sendRequest(method, url, responsefunction){
	if(method == 'get' || method == 'GET'){
		http.open(method,url,true);
		http.onreadystatechange = responsefunction;
		http.send(null);
		}
	}