How to call category list in footer in magento

<?php $helper $this->helper('catalog/category'?>
<?php 
foreach ($helper->getStoreCategories() as $_category): ?>
<a href="<?php echo Mage::getModel('catalog/category')                                                                                                                                                                                                                                                                                            ->setData($_category->getData())->getUrl(); ?>" title="<?php echo $_category->getName() ?>">   <?php echo $_category->getName() ?></a>
<?php endforeach ?>