$(document).ready(function() {
    $('div.epg-emit-title').toggle(
        function(){
            $(this).children('.imgArrow').attr('src','/graphic/img/arrowUp.gif');
            $(this).next('div.epg-content-emit-group').show('slow');
        }, function() {
            $(this).children('.imgArrow').attr('src','/graphic/img/arrowDown.gif');
            $(this).next('div.epg-content-emit-group').hide('slow');
        });

    
});