//ブラウザ判別＆最適CSSファイルへ振り分け



//mainScript-------------------------



os = getOSType();

browser = getBrowserName();

version = getBrowserVersion();

if (os == "MacOS")   dirName = "css/mac/";

if (os == "Windows") dirName = "css/win/";

if (os == "UNIX")    dirName = "unix/";

if (browser == "Netscape") dirName += "nn";

if (browser == "Explorer") dirName += "ie";

if ((version >= 3) && (version < 4))   dirName += "3.css";

if ((version >= 4) && (version < 5))   dirName += "4.css";

if ((version >= 5) && (version < 6)) dirName += "5.css";

if ((version >= 6) && (version < 7))   dirName += "6.css";

document.write("<link rel='stylesheet' href='"+dirName+"' type='text/css'>");



//functions-------------------------



//Macintosh           ->  MacOS

//Windows95/98/NT/2000  ->Windows

//UNIX                  ->UNIX



function getOSType()

{

    var uAgent  = navigator.userAgent.toUpperCase();

    if (uAgent.indexOf("MAC") >= 0) return "MacOS";

    if (uAgent.indexOf("WIN") >= 0) return "Windows";

    if (uAgent.indexOf("X11") >= 0) return "UNIX";

    return "";

}

//Netscape Navigator ->  Netscape

//Internet Explorer  ->Explorer

function getBrowserName()

{

    var aName  = navigator.appName.toUpperCase();

    if (aName.indexOf("NETSCAPE") >= 0)  return "Netscape";

    if (aName.indexOf("MICROSOFT") >= 0) return "Explorer";

    return "";

}

function getBrowserVersion()

{

	var browser = getBrowserName();

	var version = 0;

	var s = 0;

	var e = 0;

	var appVer  = navigator.appVersion;

	if (browser == "Netscape")

	{

		s = appVer.indexOf(" ",0);

		version = eval(appVer.substring(0,s));

		if (version >= 5) version++;

	}

	if (browser == "Explorer")

	{

		appVer  = navigator.userAgent;

		s = appVer.indexOf("MSIE ",0) + 5;

		e = appVer.indexOf(";",s);

		version = eval(appVer.substring(s,e));

	}

	return version;

}