var ua = navigator.userAgent;
var pf = navigator.platform;
var mode;
var check;

//OSを判別します
if(ua.indexOf("Win")!=-1){//Windowsの判別
	osWin();

} else if(ua.indexOf("Mac")!=-1){//Macの判別
	osMac();

} else {//その他OSはWINとして扱います
	osWin();
}



function osWin(){
	if(ua.indexOf("Opera", 0) >= 0){//Opera
		mode = "Opera";
		check = "OK";
		
	} else if(ua.indexOf("MSIE 6",0) >= 0){//IE6
		mode = "IE6";
		check = "OK";
		
	} else if(ua.indexOf("MSIE 5",0) >= 0){//IE5
		mode = "IE6";
		check = "OK";
		
	} else if(ua.indexOf("MSIE 4",0) >= 0){//IE4
		check = "NG";
		
	} else if(ua.indexOf("Netscape/7",0) >= 0){//N7
		mode = "NN7";
		check = "OK";
		
	} else if(ua.indexOf("Netscape6",0) >= 0){//N6
		check = "NG";
		
	} else if(ua.indexOf("Mozilla/4",0) >= 0){//N4
		check = "NG";
		
	} else{ mode = "OTHER";//other
		mode = "IE6";
		check = "OK";
	}
}



function osMac(){
	if(ua.indexOf("Opera", 0) >= 0){//Opera
		mode = "Opera";
		check = "OK";
		
	} else if(ua.indexOf("Safari", 0) >= 0){//Safari
		mode = "Safari";
		check = "OK";
		
	} else if(ua.indexOf("MSIE 6",0) >= 0){//IE6
		mode = "IE6";
		check = "OK";
		
	} else if(ua.indexOf("MSIE 5.23", 0) >= 0){//IE5
		mode = "MSIE5";
		check = "OK";
		
	} else if(ua.indexOf("MSIE 4",0) >= 0){//IE4
		check = "NG";
		
	} else if(ua.indexOf("Netscape/7",0) >= 0){//N7
		mode = "MacNN7";
		check = "OK";
		
	} else if(ua.indexOf("Netscape6",0) >= 0){//N6
		check = "NG";
		
	} else if(ua.indexOf("Mozilla/5.0",0) >= 0){//N4
		mode = "MacNN7";
		check = "OK";
	}
}


if(mode=="Safari"){
	document.write ("<link rel='stylesheet' type='text/css' href='http://www.twj.to/css/safari.css'>");
} else if(mode=="MSIE5"){
	document.write ("<link rel='stylesheet' type='text/css' href='http://www.twj.to/css/macie.css'>");
}