function getXhr(){
var xhr = null; 
	if(window.XMLHttpRequest)
	   xhr = new XMLHttpRequest(); 
	else if(window.ActiveXObject){ 
	   try {
				xhr = new ActiveXObject("Msxml2.XMLHTTP");
			} catch (e) {
				xhr = new ActiveXObject("Microsoft.XMLHTTP");
			}
	}
	else {
	   alert("Veuillez changer de navigateur pour utiliser notre site."); 
	   xhr = false; 
	} 
					return xhr;
}
//--------------------------------------------
//--------------------------------------------
//--------------------------------------------
function go(page,id_pointage,aff)
{
var xhr = getXhr();
xhr.onreadystatechange = function(){

	if(xhr.readyState == 4 && xhr.status == 200)
	{
		rep = xhr.responseText;
		if (rep.substr(0, 7)=="[ALERT]" && rep.substr(rep.length-7, 7) == "[ACHAT]") alert (rep.substr(7, rep.length-14));
		else if (rep.substr(0, 7)=="[ALERT]" && rep.substr(rep.length-7, 7) != "[ACHAT]") alert (rep.substr(7, rep.length));
		else document.getElementById(aff+id_pointage).innerHTML = rep;
		
		if (rep.substr(rep.length-7, 7)=="[ACHAT]") document.location="index.php?p=achat";
		
		if (aff == "rep_encherir_index_") go('MajCompte.php','','rep_maj_compte');
	}
	else if(xhr.readyState == 1 && aff == "rep_encherir_index_" && aff != "") document.getElementById(aff+id_pointage).innerHTML = "Chargement...";
}


xhr.open("POST","Ajax/"+page,true);
xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');

xhr.send("");
}