bName = navigator.appName;             
if      (bName == "Netscape") version = "ns";
else if (bName == "Microsoft Internet Explorer") version = "ie";
 
if (version == "ns") {
    document.writeln ('<link rel="stylesheet" href="http://www.coloramafilm.de/formate_ns.css" type="text/css">');
}
 
if (version == "ie") {
    document.writeln ('<link rel="stylesheet" href="http://www.coloramafilm.de/formate_ie.css" type="text/css">');
}