if (document.images) {
  SLIDES1.image = document.images.SLIDES1IMG;
  SLIDES1.update();
  SLIDES1.play();

  SLIDES2.image = document.images.SLIDES2IMG;
  SLIDES2.update();
  SLIDES2.play();
  
  SLIDES3.image = document.images.SLIDES3IMG;
  SLIDES3.update();
  SLIDES3.play();
  
  SLIDES4.image = document.images.SLIDES4IMG;
  SLIDES4.update();
  SLIDES4.play();
}