Sub category listing in Magento - php

Question

I've looked around a lot and found lots about pulling in parent Id's and sub cat listings but this is slight different and I don't seem to able to find an answer, I'm not a PHP guru (yet)
so go easy on me. I've tried various things but I just end up with errors.
I have created a phtml template to display sub categories of a parent category in an inline link block below my main nav. I'm calling this template with a static block from the admin which is working fine, but the link block disappears when I navigate through to a subcategory page, obviously because this code calls sub cats of a parent but not while you are actually IN a sub cat. here's the code I'm using so far:
<?php if (!Mage::registry('current_category')) return ?>
<?php $_categories = $this->getCurrentChildCategories() ?>
<?php $_count = is_array($_categories)?count($_categories):$_categories->count(); ?>
<?php if($_count): ?>
<div class="category-products <?php echo Mage::getModel('catalog/layer')->getCurrentCategory()->getName(); ?>">
<dl id="narrow-by-list2">
<dt></dt>
<dd>
<ol class="subcat_list">
<?php foreach ($_categories as $_category): ?>
<?php if($_category->getIsActive()): ?>
<li>
<a href="<?php echo $this->getCategoryUrl($_category) ?>"<?php if ($this->isCategoryActive($_category)): ?> class="current"<?php endif; ?>><?php echo $this->htmlEscape($_category->getName()) ?></a>
</li>
<?php endif; ?>
<?php endforeach ?>
</ol>
</dd>
</dl>
<script type="text/javascript">decorateDataList('narrow-by-list2')</script>
</div>
<?php endif; ?>
any ideas as to how I can modify this so the list stays there while I'm actually viewing a sub cat?
Many thanks

Answer 1

After much looking around I finally stumbled on what I needed
Thanks MagikSwapna for your input it helped me understand things a little more
I eventually ended up with this
<div class="category-products <?php echo $this->getLayout()->createBlock('cms/block')->setBlockId('parent_cat_name')->toHtml() ?>">
<?php echo "<ol class='subcat_list'>"; ?>
<?php
$currentCat = Mage::registry('current_category');
if ( $currentCat->getParentId() == Mage::app()->getStore()->getRootCategoryId() )
{
// current category is a toplevel category
$loadCategory = $currentCat;
}
else
{
// current category is a sub-(or subsub-, etc...)category of a toplevel category
// load the parent category of the current category
$loadCategory = Mage::getModel('catalog/category')->load($currentCat->getParentId());
// #TODO enhance for more nested category levels to display sub-categories
}
$subCategories = explode(',', $loadCategory->getChildren());
foreach ( $subCategories as $subCategoryId )
{
$cat = Mage::getModel('catalog/category')->load($subCategoryId);
if($cat->getIsActive())
{
if($crcat == $cat->getName()) //Check if current category is this subcategory
echo '<li><b>'.$cat->getName().'</b>'.'</li>'; //If yes display it as bold (Currently Selected)
else //
echo '<li>'.$cat->getName().''.'</li>'; //Otherwise display it as normal
}
}
?>
<?php echo "</ol>"; ?>
</div>
and it's working fine, I created a custom layout to use for the category pages and it will throw an error if used in a non-category related page, but it works!
Finally.

Answer 2

<?php $_helper = Mage::helper('catalog/category') ?>
<?php $_categories = $_helper->getStoreCategories() ?>
<?php if (count($_categories) > 0): ?>
<ul>
<?php foreach($_categories as $_category): ?>
<li>
<?php echo $_category->getName() ?>
<?php $_category = Mage::getModel('catalog/category')->load($_category->getId()) ?>
<?php $_subcategories = $_category->getChildrenCategories() ?>
<?php if (count($_subcategories) > 0): ?>
<?php foreach($_subcategories as $_subcategory): ?>
<h3><?php echo $_subcategory->getName() ?></h3>
<!--sub sub category-->
<?php $_subcategory = Mage::getModel('catalog/category')->load($_subcategory->getId()) ?>
<?php $_subsubcategories = $_subcategory->getChildrenCategories() ?>
<?php if (count($_subsubcategories) > 0): ?>
<ul>
<?php foreach($_subsubcategories as $_subsubcategory): ?>
<li>
<?php echo $_subsubcategory->getName() ?>
<?php $_subsubsubcategory = Mage::getModel('catalog/category')->load($_subsubcategory->getId()) ?>
<?php $_subsubsubcategories = $_subsubcategory->getChildrenCategories() ?>
<?php if (count($_subsubsubcategories) > 0): ?>
<ul>
<?php foreach($_subsubsubcategories as $_subsubsubcategory): ?>
<li>
<span><?php echo $_subsubsubcategory->getName() ?></span>
</li>
<?php endforeach; ?>
</ul>
<?php endif; ?>
</li>
<?php endforeach; ?>
</ul>
<?php endif; ?>
<!--sub sub category-->
<?php endforeach; ?>
<?php endif; ?>
</li>
<?php endforeach; ?>
</ul>
<?php endif; ?>