$(document).ready(function() {
 // hides the slickbox as soon as the DOM is ready (a little sooner that page load)
  $('#pcsysreq-block').hide();
  
 // shows and hides and toggles the slickbox on click  
  $('#toggle-pcreqs').click(function() {
    $('#pcsysreq-block').toggle(400);
    return false;
  });
});

$(document).ready(function() {
  $('#macsysreq-block').hide();
  
  $('#toggle-macreqs').click(function() {
    $('#macsysreq-block').toggle(400);
    return false;
  });
});