Custom Menu In Magento

<?php

        $root_category = Mage::getModel(‘catalog/category’)->load(3); // Put your root category ID here.

        $subcategories = $root_category->getChildren();

  foreach(explode(‘,’,$subcategories) as $subcategory) {

        $category = Mage::getModel(‘catalog/category’)->load($subcategory);

        echo ‘<a href=”‘.$category->getURL() .'” />’.$category->getName().'</a><br/>’;

  }

  ?>