jQuery.preloadImages = function() {
  for(var i = 0; i<arguments.length; i++)
  {
    jQuery("<img>").attr("src", arguments[i]);
  }
}

function rotateMainImage() {
  $('#img-gallery li:first').animate({marginLeft: '-307px'}, 3000);

  $('.img-box .img:last').fadeOut(3000);
  $('.img-box .img:eq(2)').fadeIn(3000);

  setTimeout(function () {
    $('.img-box .img:last').remove().prependTo('.img-box');
    $('#img-gallery li:first').remove().appendTo('#img-gallery').css({marginLeft: '10px'});

    rotateMainImage();
  }, 6000);
}

$(function() {
  $.preloadImages("images/home-rotation-images/home-1.jpg", "images/home-rotation-images/home-2.jpg", "images/home-rotation-images/home-3.jpg", "images/home-rotation-images/home-4.jpg");
  $.preloadImages("images/home-rotation-images/home-thumb-1.jpg", "images/home-rotation-images/home-thumb-2.jpg", "images/home-rotation-images/home-thumb-3.jpg", "images/home-rotation-images/home-thumb-4.jpg");

  setTimeout(rotateMainImage, 1000);
});