function get_devis() {

	var url = "http://www.discountpark.fr";
	
	var datedepart = document.forms['devis'].depart.value;
	var dateretour = document.forms['devis'].retour.value;
	var categorie = document.forms['devis'].categorie.value;
	var nbpers = document.forms['devis'].nbpers.value;
	var lang = document.forms['devis'].lang.value;

    var xhr=null;
    
    if (window.XMLHttpRequest) { 
        xhr = new XMLHttpRequest ();
    }
    else if (window.ActiveXObject) 
    {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
    }
    xhr.onreadystatechange = function() { alert_ajax(xhr); };
    
	var get_str = url + "/ajax/reponse_ajax.php?date_retour="+dateretour+"&date_depart="+datedepart+"&categorie="+categorie+"&nbpers="+nbpers+"&lang="+lang;
	
	xhr.open("GET",get_str, true);
    xhr.send(null);
}

function alert_ajax(xhr) {	
    if (xhr.readyState==4) 
    {
    	var docXML= xhr.responseXML;
		
		var jour  = docXML.getElementsByTagName("jour").item(0).firstChild.data;
		var nbpers  = docXML.getElementsByTagName("nbpers").item(0).firstChild.data;
    	var int = docXML.getElementsByTagName("int").item(0).firstChild.data;
		var ext = docXML.getElementsByTagName("ext").item(0).firstChild.data;
    	var intr = docXML.getElementsByTagName("intr").item(0).firstChild.data;
		var extr = docXML.getElementsByTagName("extr").item(0).firstChild.data;
		var lang = docXML.getElementsByTagName("lang").item(0).firstChild.data;
		
		var completint = docXML.getElementsByTagName("completint").item(0).firstChild.data;
		var completext = docXML.getElementsByTagName("completext").item(0).firstChild.data;
		
		if (jour > 1) {
			if (lang == 1) {
				document.getElementById('nbjour').innerHTML = jour + " jours/" + nbpers + " p.";
			} else {
				document.getElementById('nbjour').innerHTML = jour + " days/" + nbpers + " p.";
			}
		} else {
			if (lang == 1) {
				document.getElementById('nbjour').innerHTML = "un jour/" + nbpers + " p.";
			} else {
				document.getElementById('nbjour').innerHTML = "one day/" + nbpers + " p.";
			}
		}
		
		if (intr != 0) {
			document.getElementById('coutint').innerHTML = "<strike>" + int + "&euro;</strike>&nbsp;&nbsp;" + Number(intr).toFixed(2) + "&euro;";
		} else {
			document.getElementById('coutint').innerHTML = Number(int).toFixed(2) + "&euro;";
		}
		if (extr != 0) {
			document.getElementById('coutext').innerHTML = "<strike>" + ext + "&euro;</strike>&nbsp;&nbsp;" + Number(extr).toFixed(2) + "&euro;";
		} else {
			document.getElementById('coutext').innerHTML = Number(ext).toFixed(2) + "&euro;";
		}
		document.getElementById('completext').style.display = "none";
		document.getElementById('completint').style.display = "none";
		if (completext == "true") document.getElementById('completext').style.display = "block";
		if (completint == "true") document.getElementById('completint').style.display = "block";
		
		document.getElementById('bloc_info').style.display = "none";
		document.getElementById('bloc_parking').style.display = "block";		
		
    }
}