function creationXHR() {
	
				if (window.XMLHttpRequest) return new XMLHttpRequest();
			 
			    if (window.ActiveXObject)
			    {
			        var names = [
			            "Msxml2.XMLHTTP.6.0",
			            "Msxml2.XMLHTTP.3.0",
			            "Msxml2.XMLHTTP",
			            "Microsoft.XMLHTTP"
			        ];
			        
			        for(var i in names)
			        {
			            try{ return new ActiveXObject(names[i]); }
			            catch(e){};
			        }
			    }
			    
			    alert("Votre navigateur ne prend pas en charge l'objet XMLHTTPRequest.");

		}