text: ///////////////////////////////
  // Class Pad
  // Sprite size: 120x20
  ///////////////////////////////
  var Pad = cc.Class.extend({
      _WIDTH: 120,
      _HEIGHT: 20,
      _PADDING_BOTTOM: 40,
      _sprite: null,
  
      ctor: function(layer) {
          this._sprite = new cc.Sprite(res.Pad_png);
          this._sprite.setPosition(cc.p(cc.winSize.width / 2, (this._HEIGHT / 2) + this._PADDING_BOTTOM));
          layer.addChild(this._sprite, 0);
      },
  
      move: function(delta) {
          var pos = this._sprite.getPosition();
          pos.x = pos.x + delta.x;
  
          var size = cc.director.getWinSize();
          if ((pos.x - (this._WIDTH / 2) > 0) && (pos.x + (this._WIDTH / 2) < size.width)) {
              //if ((pos.y > 0) && (pos.y < size.height)) {
                  this._sprite.setPosition(pos);
              //}
          }
      },
  
      getBoundingBox: function() {
          return this._sprite.getBoundingBox();
      },
  
      getSprite: function() {
          return this._sprite;
      }
  });