//------------------stylesheets-------------------------------------------------
IE = (navigator.appName == "Microsoft Internet Explorer");
NS = (navigator.appName == "Netscape");
Mac = (navigator.appVersion.indexOf("Mac") != -1);
MacIE4 = (navigator.appVersion.substring(0, 24) == "4.0 \(compatible\; MSIE 4.");

//-- Mac-IE 4--
if (Mac && IE && MacIE4) {
document.write("<LINK REL=stylesheet HREF=\"mac4.css\" TYPE=\"text/css\">");
}
//-- Mac-Netscape 4--
else if (Mac && NS && (parseInt(navigator.appVersion) < 5 )) {
document.write("<LINK REL=stylesheet HREF=\"mac4.css\" TYPE=\"text/css\">");
}
//-- PC-IE, Netscape, Mac-Netscape 6, IE 5--
else {
document.write("<LINK REL=stylesheet HREF=\"default.css\" TYPE=\"text/css\">");
}