XML gallery problems

I have a resizeable xml gallery, based on the kirupa tutorial (http://www.kirupa.com/developer/mx2004/thumbnails.htm).

But the “preloder_bar” and “percentRemaining” dosen´t seem to work. Maybe its the resizing window that mess things up? The very first image that loads appears in the wrong place. Whats wrong…? I dont get it! Can someone please help…?!