if (navigator.platform.substring(0,3).toLowerCase()=='mac')
{
   document.write("<link rel='stylesheet' href='../../css/mac.css'>");
}
else if (navigator.platform.substring(0,5).toLowerCase()=='linux')
{
   document.write("<link rel='stylesheet' href='../../css/linux.css'>");
}
else
{
   if (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1)>='4')
   {
      document.write("<link rel='stylesheet' href='../../css/ns.css'>");
   }
   if (navigator.appName == "Netscape" && navigator.appVersion.substring(0,1)=='5')
   {
      document.write("<link rel='stylesheet' href='../../css/ie.css'>");
   }
   if (navigator.appName == "Microsoft Internet Explorer" && navigator.appVersion.substring(0,1)>=4)
   {
      document.write("<link rel='stylesheet' href='../../css/ie.css'>");
   }
   else
   {
      document.write("<link rel='stylesheet' href='../../css/ns.css'>");
   }
}