if (navigator.userAgent.indexOf("Win") >= 0) {
		if (vercheck(1,0)) {
				document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/win_ie.css">')
		} else {
				document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/win_nn.css">')
		}
} else {
		document.write('<LINK REL="stylesheet" TYPE="text/css" HREF="css/mac.css">')
}

function vercheck(IEversion,NNversion) {
	if ((navigator.appName.indexOf("Microsoft") >= 0)
		&&(IEversion != 0)
		&&(IEversion <= parseFloat(navigator.appVersion))) {
		return true
	} else {
		if ((navigator.appName.indexOf("Netscape") >= 0)
			&&(NNversion != 0)
			&&(NNversion <= parseFloat(navigator.appVersion))) {
			return true
		} else {
			return false
		}
	}
}