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

function show_vetrina(chiamata)
{ 
richiesta=chiamata;
vetrina=GetXmlHttpObject();
if (vetrina==null)
 {
 alert ("Browser does not support HTTP Request");
 return
 } 
var url="getvetrina.php";
url=url+"?chiamata="+escape(richiesta);
url=url+"&sid="+Math.random();
vetrina.onreadystatechange=stateChangedvetrina; 
vetrina.open("GET",url,true);
vetrina.send(null);
}

function stateChangedvetrina() 
{ 
 var tmp=richiesta.split("|");

 if (vetrina.readyState==4 || vetrina.readyState=="complete")
 {	
 if(tmp.length==5)
 {
 document.getElementById("menu").innerHTML='';
 } 
 maximize(); 
 if(tmp.length>1 && tmp.length !=4 && tmp[0]!="" && tmp[0]!=null)
 {
 show_sottomenu(richiesta);
 }
 document.getElementById("content").innerHTML=vetrina.responseText; 
 locale=richiesta; 
 }
 else
 {	  
 if(tmp.length==5)
 {
 document.getElementById("menu").innerHTML='';
 }
 document.getElementById("content").innerHTML='<img src="img/loading.gif" border="0">'; 
 }

 }