head.ready(document, function () {
    if (!window.jQuery) {
        head.load("download-jquery/jquery.min.js", loadjQueryUI);
    } else {
        resourceLoadedSuccessfully();
    }
});

function loadjQueryUI() {
    head.load("download-jquery/jquery-ui.min.js", loadjQueryCookies);
}

function loadjQueryCookies() {
    head.load("download-jquery/jquery.cookie.min.js", resourceLoadedSuccessfully);
}

function requestGeoPosition() {
    console.log("Requesting GeoLocation data from the browser...");
    if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(showGeoPosition, logGeoLocationError,
            {maximumAge: 600000, timeout: 1000, enableHighAccuracy: true});
    } else {
        console.log("Browser does not support Geo Location");
    }
}

function logGeoLocationError(error) {
    switch (error.code) {
        case error.PERMISSION_DENIED:
            console.log("User denied the request for GeoLocation.");
            break;
        case error.POSITION_UNAVAILABLE:
            console.log("Location information is unavailable.");
            break;
        case error.TIMEOUT:
            console.log("The request to get user location timed out.");
            break;
        default:
            console.log("An unknown error occurred.");
            break;
    }
}

function showGeoPosition(position) {
    $('[name="geolocation"]').val(position.coords.latitude + ","
        + position.coords.longitude + "," + position.coords.accuracy + "," + position.timestamp);
}

function areCookiesEnabled() {
    if ($.cookie == undefined) {
        console.log("JQuery Cookie library is not defined")
        return;
    }

    $.cookie('cookiesEnabled', 'true');
    var value = $.cookie('cookiesEnabled');
    $.removeCookie('cookiesEnabled');
    if (value != undefined) {
        return true;
    }
    return false;
}

function animateCasMessageBoxes() {
    //flash error box
    $('#msg.errors').animate({backgroundColor: 'rgb(187,0,0)'}, 30).animate({backgroundColor: 'rgb(255,238,221)'}, 500);

    //flash success box
    $('#msg.success').animate({backgroundColor: 'rgb(51,204,0)'}, 30).animate({backgroundColor: 'rgb(221,255,170)'}, 500);

    //flash confirm box
    $('#msg.question').animate({backgroundColor: 'rgb(51,204,0)'}, 30).animate({backgroundColor: 'rgb(221,255,170)'}, 500);
}

function disableEmptyInputFormSubmission() {

    $('#fm1 input[name="username"],[name="password"]').on("input", function (event) {
        var enableSubmission = $('#fm1 input[name="username"]').val().trim() &&
            $('#fm1 input[name="password"]').val().trim();

        if (enableSubmission) {
            $("#fm1 input[name=submit]").removeAttr('disabled');
            event.stopPropagation();
        } else {
            $("#fm1 input[name=submit]").attr('disabled', 'true');
        }
    });
}

function resourceLoadedSuccessfully() {
    $(document).ready(function () {

        if (trackGeoLocation) {
            requestGeoPosition();
        }

        if ($(":focus").length === 0) {
            $("input:visible:enabled:first").focus();
        }

        if (areCookiesEnabled()) {
            $('#cookiesDisabled').hide();
        } else {
            $('#cookiesDisabled').show();
            $('#cookiesDisabled').animate({backgroundColor: 'rgb(187,0,0)'}, 30).animate({backgroundColor: 'rgb(255,238,221)'}, 500);
        }

        animateCasMessageBoxes();
        disableEmptyInputFormSubmission();

        $('#capslock-on').hide();
        $('#fm1 input[name="username"],[name="password"]').trigger("input");
        $('#fm1 input[name="username"]').focus();

        $('#password').keypress(function (e) {
            var s = String.fromCharCode(e.which);
            if (s.toUpperCase() === s && s.toLowerCase() !== s && !e.shiftKey) {
                $('#capslock-on').show();
            } else {
                $('#capslock-on').hide();
            }
        });
        if (typeof(jqueryReady) == "function") {
            jqueryReady();
        }
    });

};
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