Display categories on home page in Magento

The code below does a couple of things, first it will get all the store’s categories - it then checks to see if they are active before continuing. <?php $cats = Mage::getModel('catalog/category')->load(2)->getChildren(); $catIds = explode(',',$cats); ?> <ul> <?php foreach($catIds as $catId): ?> <li>     <?php         $category =  Mage::getModel('catalog/category')->load($catId);         echo '<a href="'.$category->getURL().'">'.$category->getName().'</a>';                         $subCats = Mage::getModel('catalog/category')->load($category->getId())->getChildren();         $subCatIds = explode(',',$subCats);         ?>         <?php if(count($subCatIds)>1):?>         <ul>         <?php foreach($subCatIds as $subCat) :?>         <li>         <?php         $subCategory = Mage::getModel('catalog/category')->load($subCat);         //echo $subCategory->getName();         if($subCategory->getIsActive())         {             echo '<a href="'.$subCategory->getURL().'">'.$subCategory->getName().'</a>';         }         ?>         </li>         <?php endforeach;?>         </ul>         <?php endif;?>         </li>         <?php endforeach; ?>