var os, ua = navigator.userAgent;
if (ua.match(/Win(dows )?NT 6\.1/)) {
	document.write("<link href='common/css/font/vista7.css' type='text/css' rel='stylesheet'>");	// Windows 7 の処理
}
else if (ua.match(/Win(dows )?NT 6\.0/)) {
	document.write("<link href='common/css/font/vista7.css' type='text/css' rel='stylesheet'>");	// Windows Vista の処理
}
else if (ua.match(/Mac|PPC/)) {
	document.write("<link href='common/css/font/mac.css' type='text/css' rel='stylesheet'>");	// Macintosh の処理
}
else if (ua.match(/Win(dows )?NT 5\.2/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Windows Server 2003 の処理
}
else if (ua.match(/Win(dows )?(NT 5\.1|XP)/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Windows XP の処理
}
else if (ua.match(/Win(dows)? (9x 4\.90|ME)/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Windows ME の処理
}
else if (ua.match(/Win(dows )?(NT 5\.0|2000)/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Windows 2000 の処理
}
else if (ua.match(/Win(dows )?98/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Windows 98 の処理
}
else if (ua.match(/Win(dows )?NT( 4\.0)?/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Windows NT の処理
}
else if (ua.match(/Win(dows )?95/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Windows 95 の処理
}
else if (ua.match(/Linux/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Linux の処理
}
else if (ua.match(/(Free|Net|Open)BSD/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// BSD 系の処理
}
else if (ua.match(/SunOS/)) {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// Solaris の処理
}
else {
	document.write("<link href='common/css/font/underXp.css' type='text/css' rel='stylesheet'>");	// 上記以外 OS の処理
}