Hvad nu hvis de har forskellig højde?

Hej

Jeg har denne kode:

numberOfPics = 10;
//********************************
for(var i=0;i<numberOfPics;i++){
    this.createEmptyMovieClip("pic"+i+"_mc",i);
    this["pic"+i+"_mc"].loadMovie("testpics/born"+i+".jpg");
}

//********************************
space = 20;
speed = 40;
max = 430;
min = 0;
pic0_mc._y = 215;
max_first = 215-pic0_mc._height/2;
min_first = -575;
firstY = pic0_mc._y;
this.onEnterFrame = function() {
    procent = 2*((this._ymouse-min-(max-min)/2)/(max-min));
    if (_xmouse>0 && _xmouse<207 && _ymouse>25 && _ymouse<430) {
        firstY += procent*speed;
        firstY = Math.min(max_first, firstY);
        firstY = Math.max(min_first, firstY);
        prev_y = firstY;
        for (var i = 0; i<numberOfPics; i++) {
            scale = 100-100*Math.abs(2*((this["pic"+i+"_mc"]._y-min-(max-min)/2)/(max-min)));
            this["pic"+i+"_mc"]._xscale = scale;
            this["pic"+i+"_mc"]._yscale = scale;
            this["pic"+i+"_mc"]._y = prev_y+this["pic"+i+"_mc"]._height/2+space;
            prev_y += space+this["pic"+i+"_mc"]._height;
        }
    }else{
        firstY = Math.min(max_first, firstY);
        firstY = Math.max(min_first, firstY);
        prev_y = firstY;
        for (var i = 0; i<numberOfPics; i++) {
            scale = 100-100*Math.abs(2*((this["pic"+i+"_mc"]._y-min-(max-min)/2)/(max-min)));
            this["pic"+i+"_mc"]._xscale = scale;
            this["pic"+i+"_mc"]._yscale = scale;
            this["pic"+i+"_mc"]._y = prev_y+this["pic"+i+"_mc"]._height/2+space;
            prev_y += space+this["pic"+i+"_mc"]._height;
        }
    }
};

Hvad den gør kan du se her:
http://www.eksperten.dk/spm/374826

Problemmet er at den kun virker med billeder i samme størrelse. Det er mine billeder ikke.

Hvad gør jeg?

: ) Jakob