AJAX + page perso SFR

function ajax(file){
	var xhr_object = null;
	
	if(window.XMLHttpRequest){ 
		xhr_object = new XMLHttpRequest();
	}else if(window.ActiveXObject){
		xhr_object = new ActiveXObject("Microsoft.XMLHTTP");
	}else{ 									
	   return "XMLHttpRequest non supportée";
	}
	
       // timestamp pour éviter la mise en cache
	var date = (new Date()).getTime();
	file += (file.indexOf('?')<0)?'?':'&';
	file += date;
	
	xhr_object.open("GET", file, false);
	xhr_object.send(null);
	return xhr_object.responseText;
}