function updateScurry(c) {

 for (i=0;i<c.imageCount;i++) {   // direction 0=right 1=left

  var newX = getLayerX(c.prefix + i) + ((c.direction[i] * 2) - 1) * (-c.speed2[i]);

  var newY = getLayerY(c.prefix + i);

  if (c.direction[i] == 1 && newX < getViewXOffset()) {  var done = 1; }

  else if (c.direction[i] == 0 && newX > getViewXOffset() + getViewWidth() - c.imageWidth) {  var done = 1; }

  else { var done = 0; }

  if (done) {

   c.direction[i] = random(2);

   c.speed2[i] = c.speed + random(4);

   var newX = getViewXOffset() + c.direction[i] * (getViewWidth() - c.imageWidth)

   var newY = getViewYOffset() + random(getViewHeight() - c.imageHeight)

  }

  moveLayer(c.prefix + i, newX, newY);

 }

 setTimeout("updateScurry(c" + c.uid + ")", c.updateDelay);