How to create footer for all widgets

Hi,

i use twenty eleven child theme… i would like to customise my sidebar widgets : add a head – body – footer png image with transparency.

The default widgets contain always the following elements :

– the container (.widget in the syle.css)
contains my body image as background repeat-y;

– the widget-title
contains the head image as background no-repeat.

The problem is that my images have transparencies, and if i put the body image as a background in the widget container, it will hide the transparencies at the bord…

Can you pls tell me how to divide the widget in two more parts :
giving a body and a footer division…

I hope i was enough clear with my English… 🙂