$(document).ready(function() {
  
  // hides the slickbox as soon as the DOM is ready
  $('#slickbox-nav1').hide();

  // toggles the slickbox on clicking the noted link
  $('#slick-toggle-nav1').click(function() {
  $('#slickbox-nav1').toggle(600);
  return false;
  });
  
  // hides the slickbox as soon as the DOM is ready
  $('#slickbox-nav2').hide();

  // toggles the slickbox on clicking the noted link
  $('#slick-toggle-nav2').click(function() {
  $('#slickbox-nav2').toggle(600);
  return false;
  });
  
  // hides the slickbox as soon as the DOM is ready
  $('#slickbox-nav3').hide();

  // toggles the slickbox on clicking the noted link
  $('#slick-toggle-nav3').click(function() {
  $('#slickbox-nav3').toggle(600);
  return false;
  });
  
  // hides the slickbox as soon as the DOM is ready
  $('#slickbox-nav4').hide();

  // toggles the slickbox on clicking the noted link
  $('#slick-toggle-nav4').click(function() {
  $('#slickbox-nav4').toggle(600);
  return false;
  });
  
  });