function afficherTout(idRub1, idRub2, idRub3){

	var xhr_object = null;
 
	if(window.XMLHttpRequest) // Firefox 
	   xhr_object = new XMLHttpRequest(); 
	else if(window.ActiveXObject) // Internet Explorer 
	   xhr_object = new ActiveXObject("Microsoft.XMLHTTP"); 
	else { // XMLHttpRequest non supporté par le navigateur 
	   alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest"); 
	   return;
	}

	var filename = "afficherTout.php?idRub1=" + idRub1 + "&idRub2=" + idRub2 + "&idRub3=" + idRub3;
	 
	xhr_object.open("GET", filename, true); 
	 
	xhr_object.onreadystatechange = function() { 
	   if(xhr_object.readyState == 4) { 
	      var tmp = xhr_object.responseText; 
	      alert (tmp);
	      document.getElementById('aff_tous_prod').style.display = 'none';
	      document.getElementById('aff_der_prod').style.display = 'block';
	   }
	}
	 
	xhr_object.send("NULL");

}