function getOSType()
{
    var uAgent  = navigator.userAgent.toUpperCase();
    if (uAgent.indexOf("MAC") >= 0) return "MacOS";
    if (uAgent.indexOf("WIN") >= 0) return "Windows";
    if (uAgent.indexOf("X11") >= 0) return "UNIX";
    return "";
}

function getBrowserName()
{
    var aName  = navigator.appName.toUpperCase();
    var uName = navigator.userAgent.toUpperCase();
    if (uName.indexOf("SAFARI") >= 0)  return "Safari";
    if (uName.indexOf("OPERA") >= 0)  return "Opera";
    if (aName.indexOf("NETSCAPE") >= 0)  return "Netscape";
    if (aName.indexOf("MICROSOFT") >= 0) return "Explorer";
    return "";
}

os      = getOSType();
browser = getBrowserName();

if ((os == "MacOS")&&(browser == "Explorer")){
	document.write("<link rel='stylesheet' href='css/basemac.css' type='text/css'>");
}
else if ((os == "MacOS")&&( browser == "Safari")){
	document.write("<link rel='stylesheet' href='css/basesa.css' type='text/css'>");
}
else if ((os == "MacOS")&&( browser == "Netscape")){
	document.write("<link rel='stylesheet' href='css/basemac.css' type='text/css'>");
}
else if ((os == "Windows")&&( browser == "Explorer")){
	document.write("<link rel='stylesheet' href='css/baseie.css' type='text/css'>");
}
else{
	document.write("<link rel='stylesheet' href='css/baseex.css' type='text/css'>");
}