function ajax_news(ptr,bloc,plus_moins,debut,fin) {

	// Récupération des champs :
	var maxx_1=document.getElementById('maxx_1').value;
	var maxx_2=document.getElementById('maxx_2').value;
	var save_1=document.getElementById('save_1').value;
	var save_2=document.getElementById('save_2').value;

	var error='';

	if (bloc=="1" && plus_moins=="plus" && save_1==maxx_1) var error=debut;
	if (bloc=="1" && plus_moins=="moins" && save_1=="1") var error=fin;

	if (bloc=="2" && plus_moins=="plus" && save_2==maxx_2) var error=debut;
	if (bloc=="2" && plus_moins=="moins" && save_2=="1") var error=fin;


	// Transfert Ajax :
	if (error=="") {

		if (bloc=="1" && plus_moins=="plus") { save_1=Math.round(save_1)+1;	document.getElementById('save_1').value=save_1; }
		if (bloc=="1" && plus_moins=="moins") { save_1=Math.round(save_1)-1; document.getElementById('save_1').value=save_1; }

		if (bloc=="2" && plus_moins=="plus") { save_2=Math.round(save_2)+1;	document.getElementById('save_2').value=save_2; }
		if (bloc=="2" && plus_moins=="moins") { save_2=Math.round(save_2)-1; document.getElementById('save_2').value=save_2; }

		var data = "plus_moins="+plus_moins+"&bloc="+bloc+"&maxx_1="+maxx_1+"&maxx_2="+maxx_2+"&save_1="+save_1+"&save_2="+save_2;

		var xhr_object = null;   
		if(window.XMLHttpRequest) xhr_object = new XMLHttpRequest();   
		else if(window.ActiveXObject) xhr_object = new ActiveXObject("Microsoft.XMLHTTP");   
		else { alert("Error XMLHttpRequest"); return; }     

		var url=ptr+"public/nouveautes_ajax.php";

		xhr_object.open("POST", url, true);   
		xhr_object.onreadystatechange = function() { if(xhr_object.readyState == 4) eval(xhr_object.responseText); }   
		xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded");   
		xhr_object.send(data);
	}
	else alert(error);
}