function AJAXReq(method,url,bool){
  if(window.XMLHttpRequest){
    myReq = new XMLHttpRequest();
  } else 
  
  if(window.ActiveXObject){
    myReq = new ActiveXObject("Microsoft.XMLHTTP");
    
    if(!myReq){
      myReq = new ActiveXObject("Msxml2.XMLHTTP");
    }
  }
  
  if(myReq){
    execfunc(method,url,bool);
  }else{
    alert("Impossibilitati ad usare AJAX");
  }
}

var ele = new Array();
function PreparaDati(nome,ele){
  stringa = "";
  var form = document.forms[nome];
   if(ele){
    var numeroElementi = ele.length;
    for(var i = 0; i < numeroElementi; i++){
     if(i < numeroElementi-1){
      stringa += ele[i]+"="+encodeURIComponent(form.elements[ele[i]].value)+"&";
    }else{
      stringa += ele[i]+"="+encodeURIComponent(form.elements[ele[i]].value);
    }
   }
  }else{
    var numeroElementi = form.elements.length;
    for(var i = 0; i < numeroElementi; i++){
     if(i < numeroElementi-1){
      stringa += form.elements[i].name+"="+encodeURIComponent(form.elements[i].value)+"&";
    }else{
      stringa += form.elements[i].name+"="+encodeURIComponent(form.elements[i].value);
    }
   }
  }
}

var myReq;
var stringa;
function InviaDati(musciu,marzo,cond){
  PreparaDati(marzo,cond);
  AJAXReq("POST",musciu,true);
}

function execfunc(method,url,bool){
  myReq.onreadystatechange = handleResponse;
  myReq.open(method,url,bool);
  
  /* Spiegare setRequestHeader */
  myReq.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8;");
  myReq.send(stringa);
}

function handleResponse(){
  if(myReq.readyState == 4){
    if(myReq.status == 200)
    document.getElementById('newsltr').innerHTML = myReq.responseText;    
    else{
      alert("Niente da fare, AJAX non funziona :(");
    }
  }
}