function SlideMenu(id) {
    if ($('#' + id).css('display') == 'none')
        $('#' + id).slideDown(500);
    else
        $('#' + id).slideUp(500);
}

function eraseEmptyElements(className) {
    elements = $('.' + className);
    elements.each(function () {
        if ($.trim($(this).html()) === '') {
            $(this).remove();
        }
    });
}
$(document).ready(function () {
    eraseEmptyElements('main-artcl3');
    eraseEmptyElements('main-by');
});