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Generate Magento top menu navigation html [$_menu = $this->getHtml('level-top')]

 

Here is the code for this line: 

<?php $_menu = $this->getHtml('level-top') ?>

...this line is located in app/design/frontend/default/[THEME]/template/page/html/topmenu.phtml

The code that does the trick:

 <?php
        $obj = new Mage_Catalog_Block_Navigation();
        $storeCategories = $obj->getStoreCategories();
        Mage::registry('current_category') ? $currentCategoryId = Mage::registry('current_category')->getId() : $currentCategoryId='';
        foreach ($storeCategories as $_category):
    ?>
            <li>
                <strong><?php echo $_category->getName(); ?></strong>
                <?php $categoryChildren = $_category->getChildren(); ?>
                <?php if($categoryChildren->count()) : ?>
                    <ul>
                        <?php foreach($categoryChildren as $_categoryChild) : ?>
                            <?php $_categoryChildModel = Mage::getModel('catalog/category')->load($_categoryChild->getId());?>
                            <?php $categoryGrandchildren=$_categoryChild->getChildren(); ?>
                            <li>
                                <?php
                                    $currentCategoryId===$_categoryChild->getId() ? $bold="style=\"font-weight:bold\"" : $bold='';
                                    echo '&emsp;' . '<a href="' . $_categoryChildModel->getUrl() . '"' . $bold . '>' .  $_categoryChild->getName() . '(' . $_categoryChildModel->getProductCollection()->count() . ')</a>';
                                ?>
                            </li>
                            <?php if($categoryGrandchildren->count()) : ?>
                                <?php foreach($categoryGrandchildren as $_categoryGrandchild) : ?>
                                    <?php $_categoryGrandchildModel = Mage::getModel('catalog/category')->load($_categoryGrandchild->getId());?>
                                    <li>
                                        <?php
                                            $currentCategoryId===$_categoryChild->getId() ? $bold="style=\"font-weight:bold\"" : $bold='';
                                            echo '&emsp;&emsp;' . '<a href="' . $_categoryGrandchildModel->getUrl() . '"' . $bold . '>' .  $_categoryGrandchild->getName() . '(' . $_categoryGrandchildModel->getProductCount() . ')</a>';
                                        ?>
                                    </li>
                                <?php endforeach; ?>
                            <?php endif; ?>
                        <?php endforeach; ?>
                    </ul>
                <?php endif; ?>
            </li>
        <?php endforeach ?>

This code is fully customizable and it will generate the top menu as it is.

Enjoy.

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