var browser     = '';
var version     = '';
var entrance    = '';
var cond        = '';
var os			= '';

if (browser == ''){
if (navigator.appName.indexOf('Microsoft') != -1)
browser = 'IE'
else if (navigator.appName.indexOf('Netscape') != -1)
browser = 'Netscape'
else browser = 'IE';
}

if (version == ''){
version= navigator.appVersion;
paren = version.indexOf('(');
whole_version = navigator.appVersion.substring(0,paren-1);
version = parseInt(whole_version);
}
if (os == ''){
if (navigator.appVersion.indexOf('Mac') != -1)
os = 'Mac'
else if (navigator.appVersion.indexOf('Microsoft') != -1)
os = 'Microsoft'
else os = 'Microsoft';

}

//if (browser == 'IE' && version >= 4 && os =='Mac');
if (browser == 'Netscape' && version >= 2.02) document.write('<'+'link rel="stylesheet" href="/includes/style/ns6.css" />');
//if (browser == 'Netscape' && os =='Mac') {document.write('<'+'link rel="stylesheet" href="./includes/style/ns6.css" />')};