Action Script Aide

function moveNext()
{
  for (var _loc2 = 0; _loc2 < len; ++_loc2)
  {
    var _loc1 = thumbBlock["thumbImg" + _loc2];
    if (_loc1.targetY == -spaceY)
    {
      _loc1._y = _loc1.targetY = spaceY * showNum;
      _loc1.no = setNumber(_loc1.no, totalNum);
      loadThumb(_loc1, _loc1.no);
      continue;
    } // end if
    _loc1.targetY = _loc1.targetY - spaceY;
  } // end of for
} // End of the function
function movePrev()
{
  for (var _loc2 = 0; _loc2 < len; ++_loc2)
  {
    var _loc1 = thumbBlock["thumbImg" + _loc2];
    if (_loc1.targetY == spaceY * showNum)
    {
      _loc1._y = _loc1.targetY = -spaceY;
      _loc1.no = setNumber(_loc1.no, totalNum);
      loadThumb(_loc1, _loc1.no);
      continue;
    } // end if
    _loc1.targetY = _loc1.targetY + spaceY;
  } // end of for
} // End of the function



isNext = true;
spaceY = thumbYsize + ySpaceThumb;
thumbBlock._x = xThumb;
thumbBlock._y = yThumb;
mask._x = xThumb - maskMargin;
mask._y = yThumb - maskMargin;
mask._width = thumbXsize + maskMargin * 2;
mask._height = spaceY * showNum + maskMargin * 2;
thumbBlock.setMask(mask);
k = i = 0;
len = showNum + 2;
openNum = 0;
while (k < len)
{
  var _mc = thumbBlock.thumbImg.duplicateMovieClip("thumbImg" + k, k);
  _mc.targetY = spaceY * k;
  _mc._y = -50 * k;
  _mc.no = i;
  loadThumb(_mc, _mc.no);
  if (k == showNum + 1)
  {
    _mc._y = _mc.targetY = -spaceY;
    _mc.no = i = totalNum - 1;
    loadThumb(_mc, _mc.no);
  } // end if
  if (i == totalNum - 1)
  {
    i = 0;
  }
  else
  {
    ++i;
  } // end else if
  _mc.onRollOver = function ()
  {
    timer.gotoAndStop(1);
  };
  _mc.onRollOut = function ()
  {
    timer.play();
  };
  _mc.onRelease = function ()
  {
    if (this.no != openNum)
    {
      loadImage(this.no);
    } // end if
  };
  _mc.onEnterFrame = function ()
  {
    this._y = this._y + 2.000000E-001 * (this.targetY - this._y);
  };
  ++k;
} // end while
nextBtn.onRelease = function ()
{
  isNext = true;
  moveNext();
  timer.gotoAndPlay(1);
};
prevBtn.onRelease = function ()
{
  isNext = false;
  movePrev();
  timer.gotoAndPlay(1);
};
thumbBlock.thumbImg._visible = false;
loadImage(openNum);