function verifySold(identitySold)
{
	var xmlHttp;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			result=xmlHttp.responseText;
			
			document.getElementById('insbuonosconto').style.display = "" ;
			
			if(result == "NULL") {
				//
				document.getElementById('insbuonosconto').innerHTML = "<span class=\"red\">Codice del buono inesistente</span>" ;
			}
			else {
				document.getElementById('insbuonosconto').innerHTML = "Il valore del buono &egrave; : "+result+"  " ;
			}
		}
	}
	xmlHttp.open("GET","serviceController.php?do=verifySold&identitySold="+identitySold,true);
	xmlHttp.send(null);
}