Need help with slideshow (i'm banging my head against the wall)

1

i’m building this little site for a friend of mine:
http://www.ejdavisphotography.com/dev/

basically the ‘homepage’ just has a slideshow that randomly pulls images from an xml file and fades them in and out. i’m using this particular slideshow (found here http://whatdoiknow.org/archives/001629.shtml) because i like how after the next image is loaded it fades on top of the previous images. the slideshow on the homepage is inside another swf which i am loading into my movie. this swf slideshow plays great the first time you view it but when you leave the scene and then go back that slideshow starts to act crazy, it starts to flicker, studder and load images really quickly. click on the link above, let the slideshow start, then click on ‘food’ and then when you get to food click on ‘home’ to go back - do that a few times. you will see that the slideshow gets all messed up. the swf is unloaded when you leave and is loaded again when you go back to that scene. i’m guessing a function needs to be deleted or a variable has to be reset but i don’t know how to fix it.

this is the code for the slideshow on the homepage (found here http://whatdoiknow.org/archives/001629.shtml):

// set random # variables - each must be 0 for first 'while' loop below
var randomNum = 0;
var randomNumLast = 0;

// parent container
var container_mc = this.createEmptyMovieClip("container",0);
// movie clip containers
container_mc.createEmptyMovieClip("loader1_mc",2);
container_mc.createEmptyMovieClip("loader2_mc",1);

// preload watcher
this.createEmptyMovieClip("watcher_mc",100);

// load xml
images_xml = new XML();
images_xml.ignoreWhite=true;
images_xml.onLoad = parse;
images_xml.load("photosquare.xml");

function parse(success) {
	if (success) {
		imageArray = new Array();
		var root = this.firstChild;
		_global.numPause = Number(this.firstChild.attributes.timer * 1000);
		_global.order = this.firstChild.attributes.order;
		_global.looping = this.firstChild.attributes.looping;
		_global.fadetime = Number(this.firstChild.attributes.fadetime);
		_global.xpos = Number(this.firstChild.attributes.xpos);
		_global.ypos = Number(this.firstChild.attributes.ypos);
		var imageNode = root.lastChild;
		var s=0;
		while (imageNode.nodeName != null) {
			imageData = new Object;
			imageData.path = imageNode.attributes.path;
			imageArray[s]=imageData;
			imageNode = imageNode.previousSibling;
			s++;
		}
		// place parent container
		container_mc._x = _global.xpos;
		container_mc._y = _global.ypos;
		// parse array
		imageArray.reverse();
		imageGen(imageArray);
	} else {
		trace('problem');
	}
}

// depth swapping
function swapPlace(clip,num) {
	eval(clip).swapDepths(eval("container_mc.loader"+num+"_mc"));
}

function loadImages(data,num) {
	if (i==undefined || i == 2) {
		i=2;
		createLoader(i,data,num);
		i=1;
	} else if (i==1) {
		createLoader(i,data,num);
		i=2;
	}
}
function createLoader(i,data,num) {
	thisLoader=eval("container_mc.loader"+i+"_mc");
	thisLoader._alpha=0;
	thisLoader.loadMovie(data[num].path);
	watcher_mc.onEnterFrame=function () {
		var picLoaded = thisLoader.getBytesLoaded();
		var picBytes = thisLoader.getBytesTotal();
		if (isNaN(picBytes) || picBytes < 4) {
			return;
		}
		if (picLoaded / picBytes >= 1) {
			swapPlace("container_mc.loader2_mc",1);
			alphaTween = new mx.transitions.Tween(thisLoader, "_alpha", mx.transitions.easing.Regular.easeOut,0,100,_global.fadetime,true);
			timerInterval = setInterval(imageGen,_global.numPause,data);
			delete this.onEnterFrame;
		}
	}
}
function imageGen(data) {
	// random, or sequential?
	if (_global.order=="random") {
		// choose random # between 0 and total number of images
		while (randomNum == randomNumLast) {
			randomNum = Math.floor(Math.random() * data.length);
			trace(randomNum);
		}
		loadImages(data,randomNum);
		randomNumLast = randomNum;
	} else if (_global.order=="sequential") {
		// start at 0, increment to total number of images, then drop back to zero when done
		if (p==undefined || p==data.length && _global.looping=="yes") { p=0; } else { break; }
		loadImages(data,p);
		p++;
	} else {
		trace ("order attribute in xml isn't correct - must specify either 'random' or 'sequential'");
	}
	clearInterval(timerInterval);
}
stop();

i don’t know why it’s happening, if you have any suggestions for me please let me know.

btw, i’m using flash 8

thanks

john