var OSType = null;

var browserType = null;



function getOS(){

  if(navigator.userAgent){

    if( navigator.userAgent.indexOf("Windows") != -1 ){

      OSType = "Windows";

    }

    else if( navigator.userAgent.indexOf("Mac") != -1 ){

      OSType = "Macintosh";

    }

    else{

      OSType = "Others";

    }

  }

  else{

    OSType = "Others";

  }

}



function getBrowser(){

  if(navigator.userAgent){

    if( navigator.userAgent.indexOf("MSIE") != -1 ){

      // MSIE

      browserType = "MSIE";

    }

    else if(navigator.userAgent.indexOf("Gecko/") != -1){

      // Gecko Browser ie. Netscape 6, 7 Mozilla 1.x etc...

      browserType = "Gecko";

    }

    else if(navigator.userAgent.indexOf("Mozilla") != -1){

      // maybe Netscape 4.xx

      browserType = "Mozilla";

    }

    else{

      browserType = "Others";

    }

  }

  else{

    browserType = "Others";

  }

}



function printCSSTag(){

  if(OSType == "Windows" && browserType == "MSIE"){

    document.writeln('<link rel="stylesheet" type="text/css" href="css/win_ie.css">');

  }

  else if(OSType == "Windows" && browserType == "Gecko"){

    document.writeln('<link rel="stylesheet" type="text/css" href="css/win_ns.css">');

  }

  else if(OSType == "Windows" && browserType == "Mozilla"){

    document.writeln('<link rel="stylesheet" type="text/css" href="css/win_ns.css">');

  }

  else if(OSType == "Macintosh" && browserType == "MSIE"){

    document.writeln('<link rel="stylesheet" type="text/css" href="css/mac_ie.css">');

  }

  else if(OSType == "Macintosh" && browserType == "Gecko"){

    document.writeln('<link rel="stylesheet" type="text/css" href="css/mac_ns.css">');

  }

  else if(OSType == "Macintosh" && browserType == "Mozilla"){

    document.writeln('<link rel="stylesheet" type="text/css" href="css/mac_ns.css">');

  }

  else{

    document.writeln('<link rel="stylesheet" type="text/css" href="css/win_ns.css">');

  }

}



getOS();

getBrowser();

