Help reference a movieclip within a movieclip

I need to reference a movieclip within a moviclip in a function, but cannot figure out how. The source is like this (look at the red text - here is my problem)

portfolioInfo = new XML();
portfolioInfo.ignoreWhite = true;
timeline = this;
portfolioInfo.onLoad = function(){
// when the xml loads, we should get the following:
/*
<PORTFOLIO>
<PICTURE
IMG_START=“IMG-START/eiendom.jpg”
IMG_END=“IMG-END/eiendom.jpg”
URL=“http://www.bewebbed.no
TARGET="_top"
/>
</PORTFOLIO>
*/
curAtRow=0;
curYpos=0;
curXpos=0;
bFirst=true;
for (child = 0; child < count; child++){
currentPicture = portfolioTag.childNodes[child];
currentPicture.attributes.IMG_START
currentThumb = menu_mc.createEmptyMovieClip(“thumbnail”+child,child);

//counting amount of images on a row - max 3
if (curAtRow==3) {
curAtRow=1
curYpos=curYpos+120;
curXpos = 0;
}
else {
curAtRow++
if(bFirst) {
curXpos=0;
bFirst=false;
}
else
{
curXpos = curXpos+110;
}
}
currentThumb._y = curYpos;
currentThumb._x = curXpos;

// need to make another clip to hold and load the actual image jpg into
// this will be placed in our currentThumb clip and simply serve the purpose
// of loading and displaying that image
// create image clip in currentThumb:
image = currentThumb.createEmptyMovieClip(“thumbnail_image”,0);
image.loadMovie(currentPicture.attributes.IMG_START);

currentThumb.TARGET = currentPicture.attributes.TARGET;
currentThumb.IMG_END = currentPicture.attributes.IMG_END;
currentThumb.URL = currentPicture.attributes.URL;

currentThumb.onRelease=function() {
[color=red]this.image.loadMovie(this.IMG_END);
[/color] getURL(this.URL, this.TARGET);
}
portfolioInfo.load(“startside.xml”);