nav_majeure = parseInt(navigator.appVersion);
nav_version = parseFloat(navigator.appVersion);
nav_version_det = parseFloat(navigator.appVersion);
nav_NS = false; nav_IE = false;
nav_nom = "Inconnu";
nav_langue = "inconnue";
nav_bit = "inconnu";
if((navigator.appName.indexOf("Netscape") != -1) && (navigator.userAgent.indexOf("Opera") == -1))
 {nav_NS = true;
  nav_nom = "Netscape Navigator";
  nav_langue = navigator.language;
  if(navigator.appVersion.indexOf("; U") != -1) {nav_bit = "128 bits"}
  if(navigator.appVersion.indexOf("; I") != -1) {nav_bit = "40 bits"}}
if(navigator.appName.indexOf("Microsoft") != -1)
 {nav_IE = true;
   nav_nom = "Microsoft Internet Explorer";
   nav_langue = navigator.systemLanguage;
   var i = navigator.appVersion.indexOf("MSIE");
   nav_version = parseFloat(navigator.appVersion.substring(i+5, i+8));
   nav_version_det += (" (" + navigator.appVersion.substring(i+5, i+8) + ")");}
var bit = screen.colorDepth;
col = "??";
if (bit == 1) {col=2}
if (bit == 4) {col=16}
if (bit == 7) {col=128}
if (bit == 8) {col=256}
if (bit == 18) {col=256}
if (bit == 16) {col=65536}
if (bit == 24) {col="16M"}
if (bit == 32) {col="64M"}