if (navigator.appName.indexOf("Explorer") != -1)
  {
    if (navigator.appVersion.indexOf("Windows") != -1)
    {                                      //URL to MSIE Win CSS
      document.write('<link rel=stylesheet href="/css/gifts.css" type="text/css">');
    }
    
  }

  else if (navigator.appName.indexOf("Netscape") != -1)
  {
    if (navigator.appVersion.indexOf("Win") != -1)    // Netscape specific navigator.appVersion
    {                                      //URL to Netscape Win CSS
      document.write('<link rel=stylesheet href="/css/giftsns.css" type="text/css">');
    }
    
  }