function createRequestObject(){
   
   var req;
   
   if(window.XMLHttpRequest){
      //For Firefox, Safari, Opera
      req = new XMLHttpRequest();
   } else if(window.ActiveXObject){
         //For IE 5+
         req = new ActiveXObject("Microsoft.XMLHTTP");
      } else {
            //Error for an old browser
            alert('Your browser is not IE 5 or higher, or Firefox or Safari or Opera');
         }
   
   return req;
}

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

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

function handleResponse(){
   if(http.readyState == 4 && http.status == 200){
      var response = http.responseText;
      if(response){
      	document.getElementById(dest).innerHTML = response;
      }
   }
}