var code=navigator.userAgent;
var app=navigator.appName.charAt(0);
var brsver=navigator.appVersion.charAt(0);

if(code.indexOf('Mac') != -1) {
	if(app == 'N' && brsver < '5') {document.write("<link rel=\"stylesheet\" href=\"css/mns.css\" type=\"text/css\">");}
	else if(app == 'N' && brsver >= '5') {document.write("<link rel=\"stylesheet\" href=\"css/mns06.css\" type=\"text/css\">");}
	else if(app == 'M') {document.write("<link rel=\"stylesheet\" href=\"css/mie.css\" type=\"text/css\">");}
	}
else if(code.indexOf('Win') != -1) {
	if(app == 'N' && brsver < '5') {document.write("<link rel='stylesheet' href='css/wns.css' type='text/css'>");}
	else if(app == 'N' && brsver >= '5') {document.write("<link rel=\"stylesheet\" href=\"css/wns06.css\" type=\"text/css\">");}
	else if(app == 'M') {document.write("<link rel=\"stylesheet\" href=\"css/wie.css\" type=\"text/css\">");}
}