function play_chapter( id_chapter ){

    getFlexApp('player').playUrl('http://monconseilmunicipal.fr/static/video/' + id_chapter + '.flv');

    display_chapter( id_chapter );

}

function display_chapter( id_chapter ){

    $('now_playing').appear();

    $('now_playing_chapter').innerHTML = '';
    $('now_playing_chapter').appendChild($('chapter_' + id_chapter).cloneNode(true))

}