Category XML gallery

hi, just working on an xml gallery that has a few ‘projects’ that have a vayring number of images with them. my problem, thumbnails are loading fine first project images are loading fine, but when i come to change the project the next lot of images wont change to the new project… heres my code

---------------FLASH FILE
var cur = 0;
var projectImage = new Array();
var projectTitle = new Array();
var projectThumb = new Array();
var project = new Array();
var total;
var increment = 0;
var thumbsLoaded = false;

//SWITCHES PROJECT
function galleryChoice(a) {
var myXML:XML = new XML();
var XML_URL:String = “images.xml”;
var myXMLURL:URLRequest = new URLRequest(XML_URL);
var myLoader:URLLoader = new URLLoader(myXMLURL);
myLoader.addEventListener(“complete”, xmlLoaded);

//LOADS XML
function xmlLoaded(event:Event):void
{
    myXML = XML(myLoader.data);
    total = myXML.children().length();
    
    if(thumbsLoaded==false){
        for (i=0; i<total; i++) {
            project.push(myXML.children()*);
            projectTitle* = myXML.children().title.children()*;
            projectThumb* = myXML.children().thumb.children()*;
            title_txt.text = projectTitle*;
        }
        thumbsLoaded = true;
        thumbLoad();
    }
    
    for (var i = 0; i<project[a].image.length(); i++) {
            //LOADS IMAGES FROM SELECTED PROJECT
            projectImage.push(project[a].image*.attribute("source"));
            trace(projectImage*);
    }
    
    //load first image from first project
    ImageLoad(projectImage[0],holderClip,0,0)
    title_txt.text = projectTitle[a]; //this works fine
}
trace(a);

}

galleryChoice(0);

//FOR TESTING OF CHANGING PROJECT
stage.addEventListener(MouseEvent.CLICK, changeProject);
var k=0;
function changeProject(event:MouseEvent):void{

if(k==0){
    k=1;
}else{
    k=0;
}
galleryChoice(k);

}

--------XML------------

<images>
<project>
<title>Lorem One</title>
<thumb>images/thumb_01.png</thumb>
<image source=“images/image_01.png” />
<image source=“images/image_01.png” />
<image source=“images/image_01.png” />
<image source=“images/image_01.png” />
</project>
<project>
<title>Lorem Two</title>
<thumb>images/thumb_02.png</thumb>
<image source=“images/image_02.png” />
<image source=“images/image_02.png” />
<image source=“images/image_02.png” />
<image source=“images/image_02.png” />
</project>
</images>

any ideas?