$(document).ready(function() {
 
  // hides the slickbox as soon as the DOM is ready
  // (a little sooner than page load)
  $('#slickbox').hide();
 
 /*
  $('a#isbnhilfe').click(function() {
    $('#hilfeboxISBN').slideToggle(400);
    return false;
  }); */
  
  $('a#isbnhilfe').mouseover(function() {
    $('#hilfeboxISBN').slideDown(400);
    return false;
  });

  $('a#isbnhilfe').mouseout(function() {
    $('#hilfeboxISBN').slideUp(400);
    return false;
  });

 
});