Randomly upload images

1

I am wondering if someone can help me.
I have some actionscript which is designed to randomly load 6 of 18 possible .jpg images into a flash file. The script currently does randomly choose an image six different times, but often the same image will be chosen twice. I need to ensure that if an image is already chosen that it will not be chosen a second time. I am pasting the script that I have below. If you can help me I would be extremely grateful.

newN = 0;

lastN = 0;

function randRange(min:Number, max:Number):Number {

        var randomNum:Number = Math.floor(Math.random()*(max-min+1))+min;

        return randomNum;

}

function getANumber():Number {

        x = randRange(0, 18);

        return x;

}

function getAnImageIndexNumber () {

        while (newN == lastN) {

                    newN = getANumber();

        }

        lastN = newN;

        return newN;

}

n = getAnImageIndexNumber();
if(n == lastN){

        if (n < 17){
                    n = n + 1;
        }else{
                    n = n – 1;
        }

}

debug = true;

_root.onLoad = function(){

images_xml = new XML();
images_xml.ignoreWhite=true;
images_xml.onLoad = parse;

if (debug) {
    images_xml.load("images.xml");
} else {
    images_xml.load("/logos/images.aspx" + "?cachebuster=" + new Date().getTime());
}

};

function startLoading1(whichImage) {
loadMovie(whichImage, “imageLoader1”);
}

function startLoading2(whichImage) {
loadMovie(whichImage, “imageLoader2”);
}

function startLoading3(whichImage) {
loadMovie(whichImage, “imageLoader3”);
}

function startLoading4(whichImage) {
loadMovie(whichImage, “imageLoader4”);
}

function startLoading5(whichImage) {
loadMovie(whichImage, “imageLoader5”);
}

function startLoading6(whichImage) {
loadMovie(whichImage, “imageLoader6”);
}

function parse(success) {
if (success) {
imageArray = new Array();
var root = this.firstChild;
var imageNode = root.lastChild;
var s=0;
while (imageNode.nodeName != null) {
imageData = new Object;
if (debug) {
imageData.path = imageNode.attributes.path;
} else {
imageData.path = imageNode.attributes.path + “?cachebuster=” + new Date().getTime();
}
imageArray[s]=imageData;
imageNode = imageNode.previousSibling;
s++;
}
imageArray.reverse();
trace(imageArray.length);
n = getAnImageIndexNumber();
startLoading1(imageArray[n].path);
n = getAnImageIndexNumber();
startLoading2(imageArray[n].path);
n = getAnImageIndexNumber();
startLoading3(imageArray[n].path);
n = getAnImageIndexNumber();
startLoading4(imageArray[n].path);
n = getAnImageIndexNumber();
startLoading5(imageArray[n].path);
n = getAnImageIndexNumber();
startLoading6(imageArray[n].path);
} else {
trace(‘problem’);
}
}