magento获得菜单分类代码

magento获得菜单分类代码，此代码在magento 1.4.2版本中使用正常，可以放在任意的.phtml文件中。此代码可以用来套用各种js菜单，实现各种各样的菜单效果。此代码来自互联网，非原创。代码如下

<div class="box layered-nav">
    <div class="head">
        <h3><?php echo $this->__('Browse By') ?></h3>
    </div>
    <h4><?php echo $this->__('Category') ?></h4>
    <div class="content">
        <div class="narrow-by">
            <dl id="narrow-by-list">
                <dd class="no-padding no-border">
                    <ol>
                    <?php
                        function showCategory( $current_category, $object )
                        {
                            if( !$current_category->getIsActive() )
                                return;

                            echo '<li>';

                            echo '<a href="' . $object->getCategoryUrl( $current_category ) . '"' . 
($object->isCategoryActive( $current_category ) ? 'class="active"' : '' ) . '>';

                            echo $object->htmlEscape( $current_category->getName() );
                            echo '</a>';
                            echo $current_category->getProductCount();

                            if ( ( $children = $current_category->getChildren() ) && $children->count() )
                            {
                                echo '<ol>';
                                foreach ( $children as $child_category)
                                    showCategory( $child_category, $object );
                                echo '</ol>';
                            }

                            echo '</li>';
                        }

                        $_categories=$this->getStoreCategories(); 

                        foreach ($_categories as $category)
                            showCategory( $category, $this );
                    ?>
                    </ol>
                </dd>
            </dl>
            <script type="text/javascript">decorateDataList('narrow-by-list')</script>
        </div>
    </div>
</div>

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