I wanted to share a pretty quick and easy way to accomplish this.
Make a single pixel gif that is the same color of your footer and upload it to your site.
Go to the AT Options "HTML Inserts: Body Bottom" and add the following...
<div style="width:100%;height:60px; background-image:url(http://your-website-path.com/pixel.gif);margin-top:-60px;position:relative;z-index:-10;"></div>
The negative margin-top will pull it up even with the top of your footer. You may need to play with the height and margin a little to avoid running into the bottom of a sidebar.
The position and z-index will assure that the div block shows *under* your footer.
Hope that this can help someone!
The Web Mechanic