var statocarrello=null;
var corichiesta="";
function GetXmlHttpObject()
{
var statocarrello=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 statocarrello=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  statocarrello=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  statocarrello=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return statocarrello;
}

function show_stato_carrello(chiamata)
{
corichiesta=chiamata;
statocarrello=GetXmlHttpObject();
if (statocarrello==null)
 {
 alert ("Browser does not support HTTP Request");
 return
 } 
var url="countcarrello.php";
url=url+"?chiamata="+corichiesta;
url=url+"&sid="+Math.random();
statocarrello.onreadystatechange=stateChanged; 
statocarrello.open("GET",url,true);
statocarrello.send(null);
}

function stateChanged() 
{ 
if (statocarrello.readyState==4 || statocarrello.readyState=="complete")
 { 
 if(document.getElementById("bag"))
 {
 document.getElementById("bag").innerHTML='ARTICOLI NEL CARRELLO: '+statocarrello.responseText;
 }
 } 
 }