//var agent = navigator.userAgent;

var appve = navigator.appVersion;
var appna = navigator.appName;
var userOs = null;
var browser = null;var version = null;
var cssSrc = null;

//JUDGE_OS


if( agent.indexOf('Win') != -1 ){
	userOs = "Win";
}

else if( agent.indexOf('Mac') != -1 ){ 
	userOs = "Mac";

}

else

{

	userOs = "other";

}


//JUDGE_BROWSER

if( appna == "Microsoft Internet Explorer" ){
	browser = "MSIE";
	version = agent.substring((agent.indexOf('MSIE') + 5),(agent.indexOf('MSIE') + 8));

}

else if( appna == "Netscape" ){
	browser = "NN";	version = appve.substring( 0,3 );

}


// STYLESHEET

var cssSrc

if ( userOs == "Mac" ){
	cssSrc = '<link rel="stylesheet" type="text/css" href="http://www.hitachi-keu.com/content/css/fsize_mac.css">';

}

else if ( userOs == "Win" && browser == "NN" ){
	cssSrc = '<link rel="stylesheet" type="text/css" href="http://www.hitachi-keu.com/content/css/fsize_win_nn.css">';

}

else if ( userOs == "Win" && browser == "MSIE" ){
	cssSrc = '<link rel="stylesheet" type="text/css" href="http://www.hitachi-keu.com/content/css/fsize_win_ie.css">';

}

else

{
	cssSrc = '<link rel="stylesheet" type="text/css" href="http://www.hitachi-keu.com/content/css/fsize_win_other.css">';

}

document.write( cssSrc ) ;