var ua = navigator.userAgent;
ua = ua.toUpperCase();
if (ua.indexOf("SAFARI") > -1) {
	document.write('<link rel="stylesheet" type="text/css" href="/css/sf.css">');
} else if (ua.indexOf("FIREFOX") > -1) {
	document.write('<link rel="stylesheet" type="text/css" href="/css/ff.css">');
} else if (ua.indexOf("NETSCAPE") > -1) {
	document.write('<link rel="stylesheet" type="text/css" href="/css/ns.css">');
} else {
	document.write('<link rel="stylesheet" type="text/css" href="/css/ie.css">');
}