Once you've done that, you may also want to adjust the FullWidthFooter css in your screen.css. Having the top margin as -60px will cause you to lose a portion of your content area (most noticeable in IE).
Your current css for the div is:
#fixedFullWidthFooter {
position: relative;
margin: -60px 0 0 0;
}
You could sort it by changing it to:
#fixedFullWidthFooter {
position: relative;
margin: 0px;
}
or whatever margins you want.