function onBefore() { 
    $('#output').html("Scrolling image:<br>" + this.src); 
} 
function onAfter() { 
    $('#output').html("Scroll complete for:<br>" + this.src) 
        .append('<h3>' + this.alt + '</h3>'); 
}

$('document').ready(function() {
	$('#box_galleria_header').cycle({ 
    fx:     'scrollLeft', 
    timeout: 3900, 
    before:  onBefore, 
    after:   onAfter,
    pager:  '#box_paginazione_galleria_header' 
 });
});