if (navigator.appName=="Microsoft Internet Explorer" && navigator.platform=="MacPPC")
 {
document.write('<LINK rel="stylesheet" type="text/css" href="css/macie.css">');
 }
else{
  if (navigator.appName=="Netscape" && navigator.platform=="MacPPC")
{
document.write('<LINK rel="stylesheet" type="text/css" href="css/macns.css">');
}
else if (navigator.appName=="Microsoft Internet Explorer" && navigator.platform=="Win32")
{
document.write('<LINK rel="stylesheet" type="text/css" href="css/winie.css">');
}
else if (navigator.appName=="Netscape" && navigator.platform=="Win32")
{
document.write('<LINK rel="stylesheet" type="text/css" href="css/winns.css">');
}
}