Soz.. could no longer edit post after 7 mins without admin permission.

In regards to my question above thanks I think I have sorted it out
.
I have found:

<div id="image_viewer" style="height: <?php echo (IMAGE_VIEWER_MEDIUM_IMAGE_HEIGHT + IMAGE_VIEWER_SMALL_IMAGE_HEIGHT - 20)?>px">

I can see that I can just edit the +20 to - 20 or whatever.

I assume measured in pixels?

I do have another question.

In IE when you hover the mouse over product image it doesn't show handover it. This javascript issue with ie ? No fix?

Thanks Great app!