Import external images relate question

Hi, experts

I have the following code that import external images and it works pretty good. First, you click on small image then a bigger image will pop up... then click on pop up image and it will be gone..... however, the small image click earlier did not go back to the original size..... I wonder how to solve the problem. Thanks

Code

var _loc1 = this;
//
function loadMe() {
      myX = 62;
      myY = 125;
      gap = 105;
      gap2 = 0.66;
      max = 4;
      counter = 0;
      var ScrollMovie:MovieClip = _loc1.createEmptyMovieClip("ScrollMovie", 1);
      for (n=1; n<howMany; n++) {
            mc = ScrollMovie.createEmptyMovieClip("myTarget"+n, 20+n);
            picture = "netblue/"+projects[n]+".jpg";
            eval("ScrollMovie.myTarget"+n).loadMovie(picture);
            //mcLoader.loadClip(picture, eval("ScrollMovie.myTarget"+n));
            if (counter>max) {
                  counter = 0;
                  myY = myY+gap;
            }
            // end if                                                            
            mc._x = myX+gap*counter;
            mc._y = myY*gap2;
            trace("counter:"+counter);
            ++counter;
      }
      //
      // end of for
      mask_mc = _loc1.attachMovie("bg", "mask_mc", _loc.getNextHighestDepth());
      mask_mc._x = bg._x;
      mask_mc._y = bg._y;
      ScrollMovie.setMask(mask_mc);
      if (howMany>20) {
            trace("Too many!!");
            //for (i=20; i>20; i++) {
            trace("Trace n = "+n);
            //}
      }
}
// End of the function
function buildMenu() {
      myX = 62;
      myY = 125;
      gap = 105;
      gap2 = 0.66;
      max = 4;
      counter = 0;
      for (i=1; i<howMany; i++) {
            mc = ScrollMovie.attachMovie("button", "button"+i, 50+i);
            // Add the following to make rollOver works
            mc.btn.onRollOut = buttonOut;
            mc.btn.onRollOver = buttonOver;
            mc.btn.onRelease = buttonClick;
            trace("Menu list --   "+i);
            mc.i = i;
            _loc1.myName = i;
            _loc1.myName = _loc1.projects[i];
            mc.person.text = _loc1.myName;
            trace("myName --   "+myName);
            _loc1.n = i;
            if (counter>max) {
                  counter = 0;
                  myY = myY+gap;
            }
            // end if                                                            
            mc._x = myX+gap*counter;
            mc._y = myY*gap2;
            trace("counter:"+counter);
            ++counter;
      }
      // end of for
}
// End of the function
function buttonOver() {
      _loc1 = this._parent._parent;
      trace("which one is roll over now --  "+this._parent);
      this._parent.gotoAndStop(6);
      _loc1.myName = _loc1.projects[i];
      mc = _loc1["myTarget"+this._parent.i];
      mc._xscale = mc._yscale=120;
      prev_width = this._parent._width;
      this._parent._xscale = this._parent._yscale=120;
      after_width = this._parent._width;
      this._parent.buffer = (after_width-prev_width)/2;
      this._parent._x -= this._parent.buffer;
      this._parent._y -= this._parent.buffer;
      mc._x -= this._parent.buffer;
      mc._y -= this._parent.buffer;
      mc.swapDepths(120);
      this._parent.swapDepths(121);
}
// End of the function
function buttonOut() {
      mc = _loc1["myTarget"+this._parent.i];
      mc._xscale = mc._yscale=100;
      this._parent._x += this._parent.buffer;
      this._parent._y += this._parent.buffer;
      mc._x += this._parent.buffer;
      mc._y += this._parent.buffer;
      this._parent._xscale = this._parent._yscale=100;
      this._parent.gotoAndStop(1);
}
function buttonClick() {
      _loc1 = this._parent._parent._parent;
      //
      _loc1.createEmptyMovieClip("zoomMC12", 9999);
      _loc1.zoomMC12._x = 322;
      _loc1.zoomMC12._y = 222;
      trace("Click on button  "+this);
      zoomMC = _loc1.zoomMC12.createEmptyMovieClip("myTarget", 9999);
      trace(" import Project bigger image n = "+this._parent.i);
      zoomPicture = "netblue/zoom/"+String(_loc1.projects[this._parent.i])+".jpg";
      //After roll over status
      for (i=1; i<20; i++) {
            mc._alpha = 30;
      }
      ///////////////////////////////////////////////
      _loc1.mcLoader.loadClip(zoomPicture, zoomMC);
      _loc1.zoomMC12.onPress = function() {
            unloadMovie(this);
            unloadMovie(whiteOutBG);
      };
}
_loc1.upStatus = 0;
//
var myListener = new Object();
myListener.onLoadInit = function(target_mc) {
      this.imageborder = 9;
      target_mc._x = -(target_mc._width/2);
      target_mc._y = -(target_mc._height/2);
      trace("Picture width  "+target_mc._width);
      //Load white BG
      _loc1.attachMovie("whiteOutBG", "whiteOutBG", 9998);
      _loc1.whiteOutBG._width = target_mc._width+2*this.imageborder;
      _loc1.whiteOutBG._height = target_mc._height+2*this.imageborder;
      _loc1.whiteOutBG._x = 322;
      _loc1.whiteOutBG._y = 222;
};
var mcLoader = new MovieClipLoader();
mcLoader.addListener(myListener);
//
//Scroller
increment = 20;
downLimit = -112;
upLimit = 0;
down.onPress = function() {
      if (ScrollMovie._y>downLimit) {
            ScrollMovie._y = ScrollMovie._y-increment;
      }
};
up.onPress = function() {
      if (ScrollMovie._y<upLimit) {
            ScrollMovie._y = ScrollMovie._y+increment;
      }
};
// End of the function
#include "netblue/netblueList.as"
var scrolling = 0;
var howMany = projects.length;
var n = 1;
loadMe();
buildMenu();
var myName;
stop();