//###########################  AJAX ##########################//

//Crea l'istanza XMLHttpRequest
function makeXmlHttp(){
	var xmlHttp;
	try{
		xmlHttp = new XMLHttpRequest();
	}
	catch(e) {
		var xmlHttpVersions = new Array("MSXML2.XMLHTTP.6.0", "MSXML2.XMLHTTP.5.0",	"MSXML2.XMLHTTP.4.0", "MSXML2.XMLHTTP.3.0",	"MSXML2.XMLHTTP", "Microsoft.XMLHTTP");
		
		for (var i=0; i<xmlHttpVersion.length && !xmlHttp; i++){
			try{
				xmlHttp = new ActiveXObject(xmlHtttpVersion[i]);
			}
			catch(e){}
		}
	}
	
	if(!xmlHttp){
		alert("Errore durante la creazione dell'oggetto XMLHttpRequest");
	}else{
		return xmlHttp;
	}
}

//###########################  /AJAX ##########################//