function coordonnes_commerce(ref,v1) {
	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 method   = "GET";
	var filename = "http://www.horaires-commerces.fr/ajax/fiche.coordonnees.php";
	var objet       = ref;
	var s1       = v1;
	var data     = null;
	
	if(s1 != "" && objet != "")
		data = "ref=" + objet + "&s1="+s1;
	
	if(method == "GET" && data != null) {
		filename += "?"+data;
		data      = null;
	}
	
	xhr_object.open(method, filename, true);
	
	xhr_object.onreadystatechange = function anonymous() {
		if(xhr_object.readyState == 4) {
			var tmp = xhr_object.responseText.split(":");

			// alert(tmp[0]);
		}
	}

	if(method == "POST")
		xhr_object.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

	xhr_object.send(data);
}