private void arrangeForFall(Container c) {
   int w = Display.getInstance().getDisplayWidth();
   for (int iter = 0; iter < c.getComponentCount(); iter++) {
     Component cmp = c.getComponentAt(iter);
     cmp.setY(-c.getHeight());
   }
 }
 private void arrangeForConcentrate(Container c) {
   int w = Display.getInstance().getDisplayWidth();
   int h = Display.getInstance().getDisplayHeight();
   int[] positionX = {-100, w / 2, w + 100, w + 100, w + 100, w / 2, -100, -100};
   int[] positionY = {-100, -100, -100, h / 2, h + 100, h + 100, h + 100, h / 2};
   for (int iter = 0; iter < c.getComponentCount(); iter++) {
     Component cmp = c.getComponentAt(iter);
     cmp.setY(positionY[iter % positionY.length]);
     cmp.setX(positionX[iter % positionX.length]);
   }
 }
 private void arrangeForInterlace(Container c) {
   int w = Display.getInstance().getDisplayWidth();
   for (int iter = 0; iter < c.getComponentCount(); iter++) {
     Component cmp = c.getComponentAt(iter);
     if (iter % 2 == 0) {
       cmp.setX(-w);
     } else {
       cmp.setX(w);
     }
   }
 }