$(document).ready(function() {

    function displayMessage(where, type, message) {
        $(where).hide();
        $(where).addClass("alert");
        $(where).addClass("alert-"+type);

        if (type == "error") {
            $(where).text("<i class=\"icon-warning-sign\"></i>");
        }
        $(where).text(message);
        $(where).fadeIn('slow');
    }

    $("#enter-subject").click(function() {

        var code = $("#enter-subject-code").val();

        if (!validCode(code)) {
            displayMessage("#enter-subject-error", "error", "Внесовте погрешен код. Обидете се повторно");

            return false;
        }

    });


});