var browser     = '';
        var version     = '';
        var entrance    = '';
        var cond        = '';
        // BROWSER?
        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 ((browser == 'IE') && (version >= 4)) document.write('<'+'link rel="stylesheet" href="design/designIEv2.css" />');
        if (browser == 'Netscape' && version >= 2.02) document.write('<'+'link rel="stylesheet" href="design/designFFv2.css" />');