I have 3 jQuery tabs and want to fill each tab with products from different categories. The tabs are displayed on a category page. In the category page "custom layout update" I have this:

```
<block type="catalog/product_list" category_id="38" limit="6" name="tabs_new" template="catalog/product/tab_list.phtml" />
<block type="catalog/product_list" category_id="39" limit="6" name="tabs_topsellers" template="catalog/product/tab_list.phtml" />
<block type="catalog/product_list" category_id="40" limit="6" name="tabs_sale" template="catalog/product/tab_list.phtml" />

```

tab\_list.phtml is just a copy of list.phtml with the toolbars stripped out and some markup changes.

In my category view.phtml file I have the following:

```
<div id="tabs-1">
    <?php echo $this->getChildHtml('tabs_topsellers') ?>
</div>
<div id="tabs-2">
    <?php echo $this->getChildHtml('tabs_new') ?>
</div>
<div id="tabs-3">
    <?php echo $this->getChildHtml('tabs_sale') ?>
</div>

```

But when I go to the page, I get this error:

```
Mage registry key "isList" already exists

```

Any ideas how I can do this?