I have an action start element .oven_program_01, panel with class .oven_panel started after click at this element.   
I have another element .back_button which closes this panel. 
When I open the panel again I can't close it. The display does't change.
This is my script:
opening action:
$('.oven_program_01').live('click', function() {
    $('.back_button').addClass('oven_panel_close_button');
    $('.oven_panel').fadeIn(300);
});
closing action:
$('.back_button').click(function() {
    if ($(this).hasClass("oven_panel_close_button")) {
        $('.oven_panel').fadeOut(300);
        $('.back_button').removeClass("oven_panel_close_button")
    }
    else {
        $(this).addClass("oven_panel_close_button")
    }
});
 
    