browserName = navigator.appName;
browserVersion = parseFloat(navigator.appVersion);
if (browserName == "Netscape" && browserVersion > 3.0)
{document.writeln("<link rel='stylesheet' href='style/nn.css' type='text/css'>");}	
else
{document.writeln("<link rel='stylesheet' href='style/default.css' type='text/css'>");}