function track_partners(id_partners,position)
	{
	//	alert(id_partners+"-"+position);
	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; 
	} 
	
	xhr_object.open("POST", "track-partners.php", true); 
	
	xhr_object.onreadystatechange = function() { 
	if(xhr_object.readyState == 4) 
	 {  }
	 //alert(xhr_object.responseText); 
	} 
	
	xhr_object.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); 
	var data = "id_partners="+id_partners+"&position="+position; 
	xhr_object.send(data);
	}