specBrowserWarning.js

/* Taken from here: http://stackoverflow.com/a/17907562 */
var getInternetExplorerVersion = function getInternetExplorerVersionFunct()
{
    var   ua
        , re
        , rv = -1;
    if (navigator.appName == 'Microsoft Internet Explorer')
    {
        ua = navigator.userAgent;
        re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
        if (re.exec(ua) != null)
            rv = parseFloat( RegExp.$1 );
    }
    else if (navigator.appName == 'Netscape')
    {
        ua = navigator.userAgent;
        re  = new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})");
        if (re.exec(ua) != null)
            rv = parseFloat( RegExp.$1 );
    }
    return rv;
};

var version = getInternetExplorerVersion();
if (version > 0 && version <= 11) {
    var   graph = document.getElementById('graph')
        , controlDetails = document.getElementById('controlDetails') 
        , browserCheck = document.getElementById('browserCheck');
    // hiding any additional menus and features

    graph.style.display = "none";
    controlDetails.style.display = "none";
    browserCheck.style.display = "block";

    browserCheck.innerHTML = "The WebVOWL demo does not work in Internet Explorer. Please use another browser, such as <a href=\"http://www.mozilla.org/firefox/\">Mozilla Firefox</a> or <a href=\"https://www.google.com/chrome/\">Google Chrome</a>, to see the demo.";
}