$(document).ready(function(){
    var weekChooser = '<ul id="choose_week">\n';
    weekChooser += '</ul>';
    $('#opening_hours').before(weekChooser);
    $('#opening_hours table').addClass('hide');
    $('#opening_hours table:first-child').removeClass('hide');
    $('#choose_week li').click(function(){
        var week = $(this).attr('class');
        $('#opening_hours table').addClass('hide');
        $('#' + week).removeClass('hide');
        $('#choose_week li.active').removeClass('active');
        $(this).addClass('active');
        return false;
    });
});