browser_version= parseInt(navigator.appVersion);
browser_type = navigator.appName;
if (browser_type == "Netscape" && browser_version < 5)
{
document.write("<link REL='stylesheet' HREF='/basic_ns.css' TYPE='text/css'>");
}
else
{
document.write("<link REL='stylesheet' HREF='/basic.css' TYPE='text/css'>");
}