$(document).ready(function() {
 // hides the slickbox as soon as the DOM is ready
 // (a little sooner than page load)
  $('#ad').hide();
 // shows the slickbox on clicking the noted link
  $('#adt').click(function() {
 $('#ad').show('slow');
 return false;
  });
 // hides the slickbox on clicking the noted link
  $('#adt').click(function() {
 $('#ad').hide('fast');
 return false;
  });
 // toggles the slickbox on clicking the noted link
  $('#adtt').click(function() {
 $('#ad').slideToggle(400);
 if(document.getElementById('adtt').innerHTML == 'KLIK HIER VOOR ONZE SPECIALE ACTIE'){
    document.getElementById('adtt').innerHTML = 'ACTIE SLUITEN';
 }else{
    document.getElementById('adtt').innerHTML = 'KLIK HIER VOOR ONZE SPECIALE ACTIE';
 }
 return false;
  });
});