function clic(my_url,my_id,my_mode) {
var xhr_object = null;

if(window.XMLHttpRequest) // Firefox
   xhr_object = new XMLHttpRequest();
else if(window.ActiveXObject) // Internet Explorer
   xhr_object = new ActiveXObject("Microsoft.XMLHTTP");

xhr_object.open("GET",my_url+"?id="+my_id+"&"+my_mode,false);
xhr_object.send(null);
return true
//if(xhr_object.readyState == 4) alert("Requête effectuée !");
}