function init() {
  var img;
  var x, y;

  // Locate placeholder image so we can use it to position the scrollers.
  img = getImage("placeholder");
  x = getImagePageLeft(img);
  y = getImagePageTop(img);

  // Create the first scroller and position it.
  myScroller1.create();
  myScroller1.hide();
  myScroller1.moveTo(x, y);
  myScroller1.setzIndex(100);
  myScroller1.show();
  myScroller1.start();
}