var agent = navigator.userAgent ;
var appve = navigator.appVersion ;
var appna = navigator.appName ;

var userOs = null ;
var browser = null ;
var version = null ;
if ( agent.indexOf('Win') != -1 ){
userOs = "Win";
}
else if ( agent.indexOf('Mac') != -1 ){
userOs = "Mac" ;
}
else{
userOs = "other" ;
}
if ( appna == "Microsoft Internet Explorer" ){
	browser = "MSIE";
	version = agent.substring((agent.indexOf('MSIE') + 5),(agent.indexOf('MSIE') + 8)) ;
}else if(agent.indexOf('Safari')!=-1){
	browser = "safari";
}else if ( appna == "Netscape" ){
	browser = "NN";
}else{
	browser = "other";
}

if (userOs == "Win") {
	if (browser == "MSIE") {
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="../css/win_ie.css">');
		//alert('Win MSIE');
	}else if (browser == "NN") {					// Netscape4�ȍ~
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="../css/win_nn.css">');
		//alert('Win NN');
	}else {
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="../css/win_other.css">');
		//alert('Win OTHER');
	}
} else if(userOs == "Mac"){
	if (browser == "MSIE") {
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="../css/mac_ie.css">');
		//alert('Mac MSIE');
	}else if (browser == "NN") {
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="../css/mac_nn.css">');
		//alert('Mac NN');
	}else if (browser == "safari") {
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="../css/mac_safari.css">');
		//alert('Mac SAFARI');
	}else {
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="../css/mac_other.css">');
		//alert('Mac OTHER');
	}
	
}