Membuat footer menjadi 3 kolom add gadget

#footer {width:950px;position:relative;clear:both;margin:15px auto;padding:5px 0 15px 0;text-align:left;color:#fff;background:#3b3b3b;-moz-border-radius-bottomleft:10px;-moz-border-radius-bottomright:10px;-webkit-border-bottom-left-radius:10px;-webkit-border-bottom-right-radius:10px;}
#credits-footer {width:840px;float:center;margin:0 auto;padding:0px;clear:both;line-height:1.3em;letter-spacing:.0em;border-top:2px solid #fff;overflow:hidden;clear:both;padding:10px 0px 0px 0px;line-height: 1.6em;text-align:center;font-family: Verdana;font-size:13px;color:#fff;font-weight:bold;}
#footer a:link {color:#fff;text-decoration:none;}
#footer a:visited {color:#fff;text-decoration:none;}
#footer a:hover {color:#fff;text-decoration:underline;}
#footer h6 {color:#fff;font-family:Verdana;font-size:12px;font-weight:normal;line-height:1em;text-transform:uppercase;margin-top:20px;margin-right:10px;padding:0 0 5px;color:#fff;border-bottom:2px solid #fff;}
#footer ul {padding:0; margin:0; color:#fff;}
#footer ul li {list-style-type:square;padding-left:2px; margin:3px 0 0 22px;}
#footer-left {width:290px; float:left; margin-left:20px;margin-bottom:20px;}
#footer-center {width:300px; float:left; margin-left:20px;margin-bottom:20px;}
#footer-right {width:290px; float:left; padding:0 5px 0 20px;margin-bottom:20px;}

<div id='footer'>
<b:section class='footer' id='footer-left' preferred='yes' showaddelement='yes'/>
<b:section class='footer' id='footer-center' preferred='yes' showaddelement='yes' style='text-decoration:none;'/>
<b:section class='footer' id='footer-right' preferred='yes' showaddelement='yes'/>
<br/>
<div id='credits-footer'> Copyright &#169; 2009 - 2012 | <a href='http://faedeveloper.blogspot.com'>fae developer</a> | All Rights Reserved
</div>
</div>