以下のコードは、第2レベル(サブ)カテゴリをロードするのに役立ちます。$ _rootCatIdは、Mage :: app()-> getStore()-> getRootCategoryId();によっても動的に設定できます。。
$_rootCatId = 2;//Root Category
$_rootCategory = Mage::getModel('catalog/category')->load($_rootCatId);
$_catName = $_rootCategory->getName();
if($_rootCategory->hasChildren())
{
$_collection = Mage::getResourceModel('catalog/category_collection')
->addAttributeToFilter('is_active', 1)
->addAttributeToSort('position', 'asc')
->joinUrlRewrite()
->addIdFilter($_rootCategory->getChildren())
->load();
foreach($_collection AS $_sub)
{
$_subCat = Mage::getModel('catalog/category')->load($_sub->getId());
if($_subCat->hasChildren())
{
echo '<li class="leve10 nav-'. $_subCat->getId() .'">';
echo '<a id="subCatLink">';
echo '<span>'. $this->htmlEscape($_subCat->getName()) .'</span>
</a>
</li>';
echo '<ul id="subCatUl" class="no-display" style="padding:0px 13px;">';
$__collection = Mage::getResourceModel('catalog/category_collection')
->addAttributeToFilter('is_active', 1)
->addAttributeToSort('position', 'asc')
->joinUrlRewrite()
->addIdFilter($_subCat->getChildren())
->load();
foreach($__collection AS $__sub)
{
$__subCat = Mage::getModel('catalog/category')->load($__sub->getId());
echo '<li class="leve20 nav-'. $__subCat->getId() .'">
<a href="'. $this->getCategoryUrl($__subCat) .'">
<span>'. $this->htmlEscape($__subCat->getName()) .'</span>
</a>
</li>';
}
echo '</ul>';
}
else
{
echo '<li class="leve10 nav-'. $_subCat->getId() .'">
<a href="'. $this->getCategoryUrl($_subCat) .'">
<span>'. $this->htmlEscape($_subCat->getName()) .'</span>
</a>
</li>';
}
}
}
else
echo 'No Categories Found...';