Zoom-expand will not move image upwards, leaving an empty border at the top

Hi,
This is a fantastic module. Nice work!

One small issue: When an image has been shrunk by the auto-zoom feature and I click on the zoom-expand button, the top position of the displayed image will not be adjusted. So the full-size image will have the top position of the shrunk image, leaving an empty border at the top, and I have to scroll down the browser to see the whole image.

So if the expanded image is large enough to fill the whole screen (or larger), it would be nice if Lightbox2 could reposition it at the very top of the screen to minimize scrolling.

On a related note, is it possible somehow to set the size of the padding around the shrunk image? I have some cases where the expanded image fits fully into the screen (but with no remaining border), but with the current settings, the padding causes the image to be shrunk a little bit, which looks bad for screenshots with text in it.

Again, thanks for this great work!