$(document).ready(function() {

  $('#dock').hide();
  $('.logo').hide();

  $('.logo').delay(600).fadeIn(600);
  $('#dock').delay(2400).fadeIn(600);

  $(window).scroll(function(){
    var scrollTop = $(window).scrollTop();
    if(scrollTop > 30)
      $('.logo').fadeOut('slow');
    else	
      $('.logo').fadeIn('slow');
  });  

});