var main = function() {
    $('.article').click(function() {
        $('.article').removeClass('current');
        $('.description').hide();

        $(this).addClass('current');
        $(this).children('.description').show();
    });
    $(document).keypress(function(event) {
        if(event.which === 111) {
            $('.current').children('.description').toggle();
        }
});

$(document).ready(main);