Possible fileReference.download() on a CD?

programming flash
1

I have a slideshow on a CD and the client wants me to put a button in so the user can save the images to their hard drive. I have this right now:


function loadItem(itemID) {
    var large = _root.gal.firstChild.childNodes[itemID].attributes.image;
    largeMCL.loadClip(large, _parent.photoHolder);
    _parent.saveBtn.onRelease = function() {
        var fileRef:FileReference = new FileReference();
        var url:String = large;
        if (!fileRef.download(url, "image.jpg")) {
            trace("couldnt open box");
        }
    };
}

Apparently, you have to pass it an absolute url http://blahblah.com/image.jpg

I need to pass a relative URL though since its local…any ideas??