var useragent = navigator.userAgent;
var bName = (useragent.indexOf('Opera') > -1) ? 'Opera' : navigator.appName;
var pos = useragent.indexOf('MSIE');
if (pos > -1) {
bver = useragent.substring(pos + 5);
var pos = bver.indexOf(';');
var bver = bver.substring(0,pos);}
var pos = useragent.indexOf('Opera');
if (pos > -1) {
bver = useragent.substring(pos + 6);
var pos = bver.indexOf(' ');
var bver = bver.substring(0, pos);}
if (bName == "Netscape") {
var bver = useragent.substring(8);
var pos = bver.indexOf(' ');
var bver = bver.substring(0, pos);}
if (bName == "Netscape" && parseInt(navigator.appversion) >= 5) {
var pos = useragent.lastIndexOf('/');
var bver = useragent.substring(pos + 1);}
if (bName == "Microsoft Internet Explorer" && navigator.platform.substring(0,3).toLowerCase() == "win") {
var style = "'pcie.css'";}
if (bName == "Netscape" && navigator.platform.substring(0,3).toLowerCase() == "win") {
var style = "'pcns.css'";}
if (bName == "Microsoft Internet Explorer" && navigator.platform.substring(0,3).toLowerCase() == "mac") {
var style = "'macie.css'";}
if (bName == "Netscape" && navigator.platform.substring(0,3).toLowerCase() == "mac") {
var style = "'macns.css'";}
if (bName == "Netscape" && navigator.platform.substring(0,3).toLowerCase() == "uni") {
var style = "'unixns.css'";}
document.write("<link rel='stylesheet' type='text/css' href=" + style + ">");