Помогите разместить по центру

 <?php if($mod_count['topmenu']) { ?>
            <div class="container_12" id="topmenu">
                <div class="grid_12">
                    <?php $this->printModules('topmenu'); ?>
                </div>
            </div>
            <?php } ?>
 
            <?php if ($mod_count['top']){ ?>
            <div class="clear"></div>
 
            <div id="topwide" class="container_12">
                <div class="grid_12" id="topmod"><?php $this->printModules('top'); ?></div>
            </div>
            <?php } ?>
 
            <div id="pathway" class="container_12">
                <div class="grid_12"><?php $this->printPathway('&rarr;'); ?></div>
            </div>
 
            <div class="clear"></div>
 
            <div id="mainbody" class="container_12">
                <div id="main" class="<?php if ($mod_count['sidebar']) { ?>grid_8<?php } else { ?>grid_12<?php } ?>">
                    <?php $this->printModules('maintop'); ?>
 
                    <?php $messages = cmsCore::getSessionMessages(); ?>
                    <?php if ($messages) { ?>
                    <div class="sess_messages">
                        <?php foreach($messages as $message){ ?>
                            <?php echo $message; ?>
                        <?php } ?>
                    </div>
                    <?php } ?>
 
                    <?php if($this->page_body){ ?>
                        <div class="component">
                             <?php $this->printBody(); ?>
                        </div>
                    <?php } ?>
                    <?php $this->printModules('mainbottom'); ?>
                </div>
                <?php if ($mod_count['sidebar']) { ?>
                    <div class="grid_4" id="sidebar"><?php $this->printModules('sidebar'); ?></div>
                <?php } ?>
            </div>
 
        </div>
 
    </div>
 
 
 
 
 
<div class="grid_4 foot_center">
 
 
<br />
<br />
<br />
<!-- admitad.banner: 610f05a2363fa93f844f3db50410a4 Vpodarok.ru -->
<a target="_blank" rel="nofollow" href="http://ad.admitad.com/goto/610f05a2363fa93f844f3db50410a4/">
<img width="728" height="90" border="0" src="http://ad.admitad.com/b/610f05a2363fa93f844f3db50410a4/" alt="Vpodarok.ru" />
<br />
<br />
<br />
</a>
<!-- /admitad.banner -->
</a>
          </div>
        </div>
    </div>
 
 
 
 
 
 
 
 
    <div id="footer">
        <div class="container_12">
            <div class="grid_8">
                <div id="copyright"><?php $this->printSitename(); ?> &copy; <?php echo date('Y'); ?></div>
            </div>
 
 
 
<div class="grid_4 foot_right">
<!-- Yandex.Metrika informer -->
<a href="https://metrika.yandex.ru/stat/?id=24129910&amp;from=informer"
target="_blank" rel="nofollow"><img src="//bs.yandex.ru/informer/24129910/3_0_FFFFFFFF_FFFFFFFF_0_pageviews"
style="width:88px; height:31px; border:0;" alt="Яндекс.Метрика" title="Яндекс.Метрика: данные за сегодня (просмотры, визиты и уникальные посетители)" onclick="try{Ya.Metrika.informer({i:this,id:24129910,lang:'ru'});return false}catch(e){}"/></a>
<!-- /Yandex.Metrika informer -->
 

<?php $this->printModules('mainbottom'); ?>
                </div>

<div class="grid_12">
			        <div class="foot_center">
			          <!-- admitad.banner: 610f05a2363fa93f844f3db50410a4 Vpodarok.ru -->
                         <a target="_blank" rel="nofollow" href="http://ad.admitad.com/goto/610f05a2363fa93f844f3db50410a4/">
                            <img width="728" height="90" border="0" src="http://ad.admitad.com/b/610f05a2363fa93f844f3db50410a4/" alt="Vpodarok.ru" />
                         </a>
			          <!-- /admitad.banner -->
			       </div>
			    </div>

.foot_center{
width:728px;
margin:0 auto;
padding: 0 0 20px
}