$(window).load( function() {
  $('#rbBackgroundDiv').delay(500).animate({opacity: .5}, 1000, function() {
    $('#content_categories .category').css({display: 'inline-block', opacity: 0}).animate({opacity: 1}, 1000);
    $('#content .TrunkShow').fadeIn(1000);
  });
});

/* Orginal Code
$(window).load( function() {
  $('#rbBackgroundDiv').delay(2000).animate({opacity: .5}, 1000, function() {
    $('#content_categories .category').css({display: 'inline-block', opacity: 0}).animate({opacity: 1}, 1000);
    $('#content .TrunkShow').fadeIn(1000);
  });
});
*/