Get category as thery are shown in admin magento
<?php
$categoryCollection = Mage::getModel('catalog/category')->getCollection()->addAttributeToFilter('parent_id', 2)->addAttributeToSort('position');
foreach($categoryCollection as $_subcategoryCollection):
$categoryId = $_subcategoryCollection->getEntityId();
$categoryName = Mage::getModel('catalog/category')->load($categoryId);
if($categoryName->getIsActive() == 1){
?>
<li><a href="<?php echo $categoryName->getUrl(); ?>"><?php echo $categoryName->getName(); ?></a></li>
<?php endif;
endforeach;
?>