if ((navigator.appVersion.indexOf("Mac") != -1)) {
	if  ((navigator.appName == "Netscape"))  {
	document.write("<LINK REL=stylesheet HREF=\"css/mac_ns.css\" TYPE=\"text/css\" />"); }
	else {
	document.write("<LINK REL=stylesheet HREF=\"css/mac_ie.css\" TYPE=\"text/css\" />"); }
}
else {
	if  ((navigator.appName == "Netscape"))  {
	document.write("<LINK REL=stylesheet HREF=\"css/win_ns.css\" TYPE=\"text/css\" />"); }
	else {
	document.write("<LINK REL=stylesheet HREF=\"css/win_ie.css\" TYPE=\"text/css\" />"); }
}