function badBrowser() {
    if ($.browser.msie && parseInt($.browser.version) <= 6) { return true; }
    if ($.browser.opera && parseInt($.browser.version) <= 9) { return true; }
    if (/Firefox[\/\s](\d+\.\d+)/.test(navigator.userAgent)) {
        var ffversion = new Number(RegExp.$1)
        if (ffversion <= 2) { return true; }
    }
    if ($.browser.safari && (navigator.appVersion.indexOf("1.0") != -1)) { return true; }
    if ($.browser.safari && (navigator.appVersion.indexOf("2.0") != -1)) { return true; }
    if ($.browser.safari && (navigator.appVersion.indexOf("3.0") != -1)) { return true; }

    if ($.browser.chrome && (navigator.appVersion.indexOf("1.0") != -1)) { return true; }
    if ($.browser.chrome && (navigator.appVersion.indexOf("2.0") != -1)) { return true; }
    if ($.browser.chrome && (navigator.appVersion.indexOf("3.0") != -1)) { return true; }
    if ($.browser.chrome && (navigator.appVersion.indexOf("4.0") != -1)) { return true; }

    return false;
}

function getBadBrowser(c_name) {
    if (document.cookie.length > 0) {
        c_start = document.cookie.indexOf(c_name + "=");
        if (c_start != -1) {
            c_start = c_start + c_name.length + 1;
            c_end = document.cookie.indexOf(";", c_start);
            if (c_end == -1) c_end = document.cookie.length;
            return unescape(document.cookie.substring(c_start, c_end));
        }
    }
    return "";
}

function setBadBrowser(c_name, value, expiredays) {
    var exdate = new Date();
    exdate.setDate(exdate.getDate() + expiredays);
    document.cookie = c_name + "=" + escape(value) + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString());
}

if (badBrowser() && getBadBrowser('browserWarning') != 'seen') {
    $(function () {
        $("<div id='browserWarning'>You are using an unsupported browser. Please switch to <a href='http://getfirefox.com'>FireFox</a>, <a href='http://www.google.com/chrome/'>Google Chrome</a>, <a href='http://www.apple.com/safari/'>Safari</a> or <a href='http://www.microsoft.com/windows/downloads/ie/getitnow.mspx'>Internet Explorer 8</a>. Thanks!&nbsp;&nbsp;&nbsp;<br /><br /></div> ")
			.css({
			    backgroundColor: '#fcfdde',
			    'width': '100%',
			    'border-top': 'solid 1px #000',
			    'border-bottom': 'solid 1px #000',
			    'text-align': 'center',
			    padding: '5px 0px 5px 0px'
			})
			.prependTo("body");

        $('#warningClose').click(function () {
            setBadBrowser('browserWarning', 'seen');
            $('#browserWarning').slideUp('slow');
            return false;
        });
    });
}