function onBefore_F() {
  $('#slide_title_fotografie').html($(this).children().attr('title'));
}
function onBefore_V() {
  $('#slide_title_vormgeving').html($(this).children().attr('title'));
}

$('#slide_fotografie').cycle({
  height: 300,
  fx: 'scrollDown',
  speed:       750, 
  timeout:   6000,
  pager:      '#nav_fotografie',
  pauseOnPagerHover: true,
  pagerAnchorBuilder: function(index, el) {
    return '<a href="#"><img src="images/spacer.gif" /></a>'; // whatever markup you want
  },
  before:       onBefore_F
});

$('#slide_vormgeving').cycle({
  height: 300,
  fx: 'scrollDown',
  speed:       750, 
  timeout:     6000,
  delay:       3000,
  pager:      '#nav_vormgeving',
  pauseOnPagerHover: true,
  pagerAnchorBuilder: function(index, el) {
    return '<a href="#"><img src="images/spacer.gif" /></a>'; // whatever markup you want
  },
  before:       onBefore_V
});