Complexing challenge for flash experts!

Please click the link on this page, first in IE than in Firefox.
http://www.ec-webservices.com/flash/century/test_century.html

Why does the everything show up fine in IE but not firefox. Please dont say the plugins because that was the first thing I tried. Also, it works everyone once in a while correctly in Firefox. But if you hit refresh, it goes away. Very complexing challenge!!!

This was originally a huge actionscript file that I have chopped down to narrow down the problem. Here is the code that is remaining.

// Load the images/text into arrays and load the first pic.
this.onLoad = function() {
picDataLoad = new LoadVars();
folder = “images/”; // Path where photos are.
picDataLoad.onLoad = function(success) {
if (success) {
galleryTitle = picDataLoad.heading;
galleryText = picDataLoad.captions;
picPath = folder+“pic1.jpg”;
loadMovie(picPath, “_root.mcPhoto”);
}
}
picDataLoad.load(“century-productions.txt”); // Load data from text file.
}