function getXhr(){
                                var xhr = null;
				if(window.XMLHttpRequest){ // Firefox et autres
				   xhr = new XMLHttpRequest();
                                }
				else if(window.ActiveXObject){ // Internet Explorer 
				   try {	             
			                xhr = new ActiveXObject("Msxml2.XMLHTTP");
			            } catch (e) {			          
			                xhr = new ActiveXObject("Microsoft.XMLHTTP");
			            }
				}
				else { // XMLHttpRequest non supporté par le navigateur 
				   alert("Votre navigateur ne supporte pas les objets XMLHTTPRequest...");
				   xhr = false;
				}
        return xhr;
			}

function trajet(trigramme){
        sel_origine = document.getElementById('ORIGINE_TMP');
				sel_destination = document.getElementById('DESTINATION');

				var_origine = sel_origine.options[sel_origine.selectedIndex].value;
				var_origine_tab = var_origine.split("!");
        var_origine1 = var_origine_tab[1];
				var_destination=sel_destination.options[sel_destination.selectedIndex].value;
        document.getElementById('confort').value="";

        var xhr = getXhr();
				xhr.onreadystatechange = function(){
					if(xhr.readyState == 4 && xhr.status == 200){
            var reponse = xhr.responseText;
						displayVSC(reponse);
					}
				}

				xhr.open("POST","http://www.artesia.eu/include/top/trajet_v2.php",true);
				xhr.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
        xhr.send("origine="+var_origine1+"&destination="+var_destination+"&trigramme="+trigramme);

}

function displayVSC(reponse){
	var reponse_tab = reponse.split("+");
	
	var heure_aller = reponse_tab[0];
	var	heure_retour = reponse_tab[1];

	document.getElementById('searchbox_heure_aller').innerHTML = heure_aller;
	document.getElementById('searchbox_heure_retour').innerHTML = heure_retour;
	
}