Question on image uploading

programming flash
1

Why is it image is not uploading when im running on swf version, but image uploading works when im running the exe version of the flash project?

And how can i add a progress bar to check if the image is uploading or not? Oh yeah, im new at actionscript so please go easy on me.

anyway here’s the code.

import com.adobe.images.JPGEncoder;

var jpgSource:BitmapData = new BitmapData (container_mc.width, container_mc.height);
jpgSource.draw(container_mc);

var jpgEncoder:JPGEncoder = new JPGEncoder(85);
var jpgStream:ByteArray = jpgEncoder.encode(jpgSource);

Save.addEventListener(MouseEvent.CLICK, save);
function save ($event:MouseEvent) {
var header:URLRequestHeader = new URLRequestHeader("Content-type", "application/octet-stream");
var jpgURLRequest:URLRequest = new URLRequest("jpg_encoder_download.php?name=sketch.jpg");
jpgURLRequest.requestHeaders.push(header);
jpgURLRequest.method = URLRequestMethod.POST;
jpgURLRequest.data = jpgStream;
navigateToURL(jpgURLRequest, "_blank");
}

// listen to button
image_button.addEventListener (MouseEvent.MOUSE_DOWN, load_image);

// load image
function load_image(event:Event):void
{
    var imageLoader:Loader = new Loader;
    imageLoader.load (new URLRequest(image_string.text));
    imageLoader.contentLoaderInfo.addEventListener (Event.COMPLETE, imageLoaded);
}

// load image
function imageLoaded(event:Event):void
{
    image_mc.addChild(event.target.content);
}

And how can i say to image_mc to load the jpeg at the center of image_mc’s axis. So that when i flip the image, the image will flip vertically at the center?

Do i make sense? sorry for my bad english >.<

Thanks a lot.