XML Photogallery help with launch button

programming flash
1

the one thing i want to add to it is a launch bar. how do i go about doing that with the XML photogallery with the 5 buttons. im not that good in coding i just understand everything and how it works. can someone help. i have the button ready and everything, idk what code i should put in, like for each pic in the gallery i want a diff link, its like a recent projects gallery, this is in FLASH 8 by the way

XML Code

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<images>
    <pic>
        <image>http://www.kirupa.com/developer/mx2004/pg/kresge.jpg</image>
        <caption>Kresge</caption>
    </pic>
    <pic>
        <image>http://www.kirupa.com/developer/mx2004/pg/medialab.jpg</image>
        <caption>Media Lab</caption>
    </pic>
    <pic>
        <image>http://www.kirupa.com/developer/mx2004/pg/stata.jpg</image>
        <caption>Stata Center</caption>
    </pic>
    <pic>
        <image>http://www.kirupa.com/developer/mx2004/pg/stata_lobby.jpg</image>
        <caption>Stata Lobby</caption>
    </pic>
    <pic>
        <image>http://www.kirupa.com/developer/mx2004/pg/construction.jpg</image>
        <caption>Construction</caption>
    </pic>
    <pic>
        <image>http://www.kirupa.com/developer/mx2004/pg/dome.jpg</image>
        <caption>The Dome</caption>
    </pic>
    <pic>
        <image>http://www.kirupa.com/developer/mx2004/pg/structure.jpg</image>
        <caption>Structure</caption>
    </pic>
</images>

Actionscript

function loadXML(loaded) {
    if (loaded) {
        xmlNode = this.firstChild;
        image = [];
        description = [];
        total = xmlNode.childNodes.length;
        for (i=0; i<total; i++) {
            image* = xmlNode.childNodes*.childNodes[0].firstChild.nodeValue;
            description* = xmlNode.childNodes*.childNodes[1].firstChild.nodeValue;
        }
        firstImage();
    } else {
        content = "file not loaded!";
    }
}
xmlData = new XML();
xmlData.ignoreWhite = true;
xmlData.onLoad = loadXML;
xmlData.load("images.xml");

listen = new Object();
listen.onKeyDown = function() {
    if (Key.getCode() == Key.LEFT) {
        prevImage();
    } else if (Key.getCode() == Key.RIGHT) {
        nextImage();
    }
};
Key.addListener(listen);
previous_btn.onRelease = function() {
    prevImage();
};
next_btn.onRelease = function() {
    nextImage();
};

p = 0;
this.onEnterFrame = function() {
    filesize = picture.getBytesTotal();
    loaded = picture.getBytesLoaded();
    preloader._visible = true;
    if (loaded != filesize) {
        preloader.preload_bar._xscale = 100*loaded/filesize;
    } else {
        preloader._visible = false;
        if (picture._alpha<100) {
            picture._alpha += 10;
        }
    }
};
function nextImage() {
    if (p<(total-1)) {
        p++;
        if (loaded == filesize) {
            picture._alpha = 0;
            picture.loadMovie(image[p], 1);
            desc_txt.text = description[p];
            picture_num();
        }
    }
}
function prevImage() {
    if (p>0) {
        p--;
        picture._alpha = 0;
        picture.loadMovie(image[p], 1);
        desc_txt.text = description[p];
        picture_num();
    }
}
function firstImage() {
    picture._alpha = 0;
    picture.loadMovie(image[p]);
    desc_txt.text = description[p];
    picture_num();
}
btn1.onRelease = function() {
    p = 0;
    firstImage();
}
btn2.onRelease = function() {
    p = 1;
    firstImage();
}
btn3.onRelease = function() {
    p = 2;
    firstImage();
}
btn4.onRelease = function() {
    p = 3;
    firstImage();
}
btn5.onRelease = function() {
    p = 4;
    firstImage();
}
function picture_num() {
    current_pos = p+1;
    pos_txt.text = current_pos+" / "+total;
}

what do i need to do to have a link for each picture to launch when previewed in the projects gallery