var x=500
var ms = navigator.appVersion.indexOf("MSIE")
ie4 = (ms>0) && (parseInt(navigator.appVersion.substring(ms+5, ms+6)) >= 4)
function deplace_ie() {
  if (x>0) {
    document.all.chemin.style.left = x;
    x=x-20;
    setTimeout("deplace_ie()",100);
  }
}
function deplace_net() {
  if (x>0) {
   document.chemin.left = x;
   x=x-20;
   setTimeout("deplace_net()",100);
  }
}