imageUploaderFlash.imagePreviewWindow Property HTML5/Flash Uploader JavaScript

$au.imageUploaderFlash({
    //...other params...
    imagePreviewWindow: {},
    //...other params...
})

$au.imageUploaderFlash('uploaderID').imagePreviewWindow(value);
value = $au.imageUploaderFlash('uploaderID').imagePreviewWindow();