mac = (navigator.appVersion.indexOf("Mac") != -1)?true:false;
ie = (navigator.appName.charAt(0) == "M")?true:false;
ns= (navigator.appName.charAt(0) == "N")?true:false;

if (mac){if (ie){fName = "cs.css";}
else if (navigator.userAgent.indexOf("Gecko")!=-1){fName = "cs.css";}
else if (ns){fName = "cs_ns.css";}
}
else{
if (ie){fName = "cs.css";}
else if (navigator.userAgent.indexOf("Gecko")!=-1){fName = "cs.css";}
else if (ns){fName = "cs_ns.css";}
}
if (fName != null){document.write("<link rel='stylesheet' href='/"+fName+"' type='text/css'>");}