function VersionNavigateur(Netscape, Explorer) {
  if ((navigator.appVersion.substring(0,3) >= Netscape && navigator.appName == 'Netscape') ||      
      (navigator.appVersion.substring(0,3) >= Explorer && navigator.appName.substring(0,9) == 'Microsoft'))
    return true;
else return false;
}

function openMovie(){
window.open("flash.htm","flash","width=580,height=309,status=no,scrollbars=no,resizable=no,location=no,menubar=no,toolbar=no,top=30,left=100");
}