[†‡Paladin‡†]

Немножко поправил и протестил код. Все работает.

var path:String = "slides.xml";

newXML = new XML();
newXML.ignoreWhite = true;
newXML.onLoad = loadSlide();

my_mc.onRollOver = function() {
	trace(path);
	newXML.load(path);
}

function randomNum(min:Number,max:Number):Number {
	var randNum:Number = Math.round(Math.random()*(max-min))+Math.min(max,min);
	return randNum;
};


function loadSlide(success){
	if(success == true){
		rootNode = myXML.firstChild;
		totalSlides = rootNode.childNodes.length;
		var arr:Array = myXML.childNodes;
		var num:Number = randomNum(1,5);
		currentSlideNode = rootNode.firstChild;
		updateSlide(arr[num]);
	}
}

function updateSlide(newSlideNode:XML) {
	imagePath = newSlideNode.attributes.jpegURL;
	slideText = newSlideNode.firstChild.nodeValue;
	loadMovie(imagePath,my_mc.my2_mc);
}