function set_checked(ref, checked) {
	$('input[id=' + ref + ']').attr('checked', checked);
}

function set_noneselected(ref) {
	$("#" + ref).val([]);
}

$(function() {
    $('#slideshow').cycle({
        delay: 1000,
        speed: 1500,
        before: onBefore
    });
    
    function onBefore() {
        $('#credit').html(this.alt);
    }
});