在此给出其中一种办法,实现网站首页左边侧栏显示商品分类目录(网站主菜单和商品菜单依旧在网站上方导航栏上)。
注:(此文Magento版本为1.4.1.0,所选用模板为modern)

1、打开app\design\frontend\default\modern\layout\catalog.xml,在适当位置加入以下代码:

<reference name="left">
<block type="catalog/navigation" name="cms_catalog" template="catalog/catalog.phtml"/>
</reference>

2、在 app\design\frontend\default\modern\template\catalog 下新建 catalog.phtml 文件,其内容为以下代码:

<?php $current_cat = $this->getCurrentCategory();?>
<?php $current_cat = (is_object($current_cat) ? $current_cat->getName() : '');?>

<div class="block">
<div class="block-title"><strong>Products Category</strong></div>
<div class="block-content">
<?php $collection = $this->getStoreCategories();?>

<?php foreach ($collection as $_category):?>
   <?php if ($_category->getName() == $current_cat) {?>
    <a href="<?php echo $this->getCategoryUrl($_category)?>"><?php echo $_category->getName()?><br/>
   <?php }else{ ?>
    <div id="Subcategory"><a href="<?php echo $this->getCategoryUrl($_category)?>"> <?php echo $_category->getName()?></a></div>
   <?php }?>

     <?php foreach($_category->getChildren() as $_childCategory):?>
     <?php if ($_childCategory->getName() == $current_cat) {?>
      <a href="<?php echo $this->getCategoryUrl($_childCategory)?>"><?php echo $_childCategory->getName()?></a><br/>
     <?php }else{ ?>
      <div id="ChildCategory"><a href="<?php echo $this->getCategoryUrl($_childCategory)?>"><?php echo $_childCategory->getName()?></a></div>
     <?php }?>

      <?php foreach($_childCategory->getChildren() as $_cchildCategory):?>
        <?php if ($_cchildCategory->getName() == $current_cat) {?>
        <a href="<?php echo $this->getCategoryUrl($_cchildCategory)?>"><?php echo $_cchildCategory->getName()?></a><br/>
        <?php }else{ ?>
        <h6 style="margin-left:10px;"><a href="<?php echo $this->getCategoryUrl($_cchildCategory)?>"><?php echo $_cchildCategory->getName()?></a></h6>
         <?php }?>

        <?php endforeach?>
    <?php endforeach?>
<?php endforeach?>
</div>
</div>

进入前台,发现网站左侧产品分类目录效果已经显现。

你还可以在/skin/frontend/default/modern/css/styles.css中添加ID #Subcategory、#ChildCategory并对其属性进行设置。