onClipEvent (load) {
speed = 5;
}

onClipEvent (enterFrame) {
if (key.isdown(key.LEFT)) {
_x-= speed;
}
if (key.isdown(key.RIGHT)) {
_x+= speed;
}
if (key.isdown(key.DOWN)) {
_y+= speed;
}
if (key.isdown(key.UP)) {
_y-= speed;
}
}

onClipEvent (load) {
speed = 5;
}
onClipEvent (enterFrame) {
if (key.isdown(key.LEFT)) {
_x-= speed;
}
if (key.isdown(key.RIGHT)) {
_x+= speed;
}
if (key.isdown(key.DOWN)) {
_y+= speed;
}
if (key.isdown(key.UP)) {
_y-= speed;
}
}

//define number of layer.
var layer = 10;
//number of items in a layer
var items = 25;
//create the bg that holds the layers
this.createEmptyMovieClip("bgHolder", this.getNextHighestDepth());
//this function will update the layers current position
function updateMovies() {
//easingStrenth
d = 10;
this.x = _root._xmouse;
this.y = _root._ymouse;
//get the linear relation fo x.
var coef = (Stage.width-this._width)/Stage.width;
//update x with easing.
this._x -= (this._x-coef*this.x)/d;
//get the linear relation fo y.
coef = (Stage.height-this._height)/Stage.height;
//update y with easing.
this._y -= (this._y-coef*this.y)/d;
}
//init function for the layers
function init() {
for (i=0; i<layer; i++) {
  //create a layer
  temp = this.bgHolder.createEmptyMovieClip("bg"+i, this.bgHolder.getNextHighestDepth());
  depth = temp.getNextHighestDepth();
  //create a virtual bag for the layer to define it height and width.
  virtual_mc = temp.attachMovie("virtual", "vitrual"+depth, depth, {_visible:false, _width:(i+2)*Stage.width, _height:(i+2)*Stage.height});
  //put the items into the layer
  for (j=0; j<items; j++) {
   depth = temp.getNextHighestDepth();
   //attach an item
   temp1 = temp.attachMovie("float1", "float"+depth, depth);
   //position it randomly in the current layer
   temp1._x = Math.random()*(i+2)*Stage.width;
   temp1._y = Math.random()*(i+2)*Stage.height;
   //scale it randomly
   rand = Math.random();
   temp1._xscale *= .10+rand;
   temp1._yscale *= .10+rand;
   //put is opacity randomly
   temp1._alpha = random(80)+20;
  }
  //each layer share the same updating function.
  temp.onEnterFrame = this.updateMovies;
}
}
init();