function CacheImages()
{
  if (!document.images) return;

  var img_names = new Array(
    "http://www.ploom.com/assets/homepic_01.jpg",
    "http://www.ploom.com/assets/homepic_02.jpg",
    "http://www.ploom.com/assets/homepic_03.jpg",
	"http://www.ploom.com/assets/homepic_04.jpg"
  );

  var imgs = new Array();

  for (var i = 0; i < img_names.length; i++)
  {
    imgs[i] = new Image();
    imgs[i].src = img_names[i];
  }
}