var quantity = 1;
var quantityCrew =1;
function refreshPax() {
 quantity = document.formServicerequest.pax.selectedIndex + 1;
}
function refreshCrew() {
 quantityCrew = document.formServicerequest.crew.selectedIndex + 1;
}

function openPoPUP(theURL,winName,features,width_popup,height_popup,typePopup) {
  if (typePopup=="crew"){
  var URLphp = theURL+"?pax="+quantityCrew; } else {
  var URLphp = theURL+"?pax="+quantity;}
  var t = (screen.height-height_popup)/2 ;
  var l = (screen.width-width_popup)/2 ;
  features+= ",top=" + t +",left=" + l + ",height=" + height_popup + ",width=" + width_popup;  
  window.open(URLphp,winName,features);
}
function autoPopup(theURL,winName,features,width_popup,height_popup) {
  var t = (screen.height-height_popup)/2 ;  // pour centre selon la hauteur de l'écran
  var l = (screen.width-width_popup)/2 ; // pour centrer selon la largeur de l'écran
  features+= ",top=" + t +",left=" + l + ",height=" + height_popup + ",width=" + width_popup;
  window.open(theURL,winName,features);
}