IE7 space between UI tab window and theme

I just want to thank you for this awesome plugin. I am using it with wp 3.1.3 with nggallery, google maps v3 shortcode, and booking calendar, as well as raw text. In firefox 4, it diplays perfectly. In IE7, it looks good but there is a large empty space between the bottom of the UI Tab window and the bottom of the theme. This space gets proportionately larger as more information is added to a UI tab window.

Does anyone have any ideas how to fix this?

Once again thanks for a fantastic plugin. The skins make for a very professional looking theme.