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

		}

	}

}