var Version = navigator.appVersion; 
var NomNav = navigator.appName; 
var TxTitle = document.title; 
var width = 75; 
var strLen = TxTitle.length; 
var pos = 1 - width; 

function Titre(){ 
  var scroll = ""; 
  pos++; 

  if (pos == strLen) pos = 1 - width; 

  if (pos<0) { 
    for (var i=1; i<=Math.abs(pos); i++) scroll = scroll + " "; 
    scroll = scroll + TxTitle.substring(0, width - i + 1); 
    for (var i=scroll.length; i<=width; i++) scroll = scroll + " ";
  } 
  else{ 
    scroll = scroll + TxTitle.substring(pos, pos + width); 
    for (var i=scroll.length; i<=width; i++) scroll = scroll + " "; 
  } 

  if (NomNav == 'Microsoft Internet Explorer') document.title = scroll; 
  setTimeout("Titre()",150);

}

Titre();