Photo gallery customization

I bit the bullet and have gotten the photo gallery tute working but now I wondering if I can get the “next” image to start fading in sooner? The reason is that the time between images is too long. I’m guessing that this is due to bandwidth. I changed the fade speed but that doesn’t really solve.
Also what is this AS doing
p._alpha = 0;
p.loadMovie(this.pathToPics+this.pArray[this.pIndex]);
this.onEnterFrame = loadMeter;
};
MovieClip.prototype.loadMeter = function() {
var i, l, t;
l = this.photo.getBytesLoaded();
t = this.photo.getBytesTotal();
if (t>0 && t == l) {
this.onEnterFrame = fadeIn;
} else {
trace(l/t);
}
};
can i tweak this to load earlier