Magento 1.9 – Accordion Left Navigation

You can achieve this with the help of static blocks.By fetching all the categories into static block and displaying them in left navigation. For getting categories into a static block follow the procedure described here.After completing that process call your static block with <reference name="left"> and later for hiding categories from top nav goto app/design/frontend/your_theme/default/template/page/html and open topmenu.phtml file and put this code in comments

<?php if($_menu): ?>
    <nav id="nav">
        <ol class="nav-primary">
            <?php echo $_menu ?>
        </ol>
    </nav>
<?php endif ?>

If there is more than one jquery library. then remove it. Use only one library in page.

In your local.xml:

<reference name="head">
    <action method="addJs" name="jquery" as="jquery">
        <script>jquery.js</script>
    </action>
    <action method="addJs">
        <script>noconflict.js</script>
    </action>
</reference>

and noconflict.js would simply be

$.noConflict();

Fore more information take a look at here : https://stackoverflow.com/questions/11175941/magento-jquery-conflict

Hope this make sense to you