ActionScript 2.0 :: Load Check On External Jpeg?

I�m making an image gallery. I want to load the large jpeg images externally. I wanted thumbnails at the bottom to fade up as the images load up, then when they are ready to be displayed, they are actually fully loaded and ready to be displayed and don�t take any more than a couple of frames to become visable, but this is eluding me.

I'm currently using Flash 10.0, and the mx.controls.loader from the flash components to load the images into, which works fine other than getting to it before the images are loaded. An Actionscript 2.0 that creates a loop over a few frames until the external image is loaded then moves on should enable me to get it done, but no luck so far.

I thought this would work:

if (this.getBytesLoaded()>=this.getBytesTotal()) {
gotoAndPlay("the label name on the next frame");
} else {
gotoAndPlay("the label name on the previous frame");
}

but it continues on the timeline even when the external image is not fully loaded yet.