Rogue Navigational Elements

Hi,

My website navigation has some rogue elements which are messing up the display. Please see here. The rogue code in question is at the bottom of this post.

I had trialed WP-osCommerce, and have since deactivated this plugin, however, the plugin navigation has not been deactivated.

How do I remove the extra code from the navigation menu?

Thanks in advance.

Steve

Rogue Code:

<ul>
	<li class="current_page_item"><a href="https://www.steve.doig.com.au/wordpress/">Home</a></li>
	<li class="page_item page-item-2"><a href="https://www.steve.doig.com.au/wordpress/about/" title="About">About</a></li>
	<li class="page_item page-item-35"><a href="https://www.steve.doig.com.au/wordpress/map-locations/" title="Map Locations">Map Locations</a></li>
	<li class="page_item page-item-99"><a href="https://www.steve.doig.com.au/wordpress/products-page/" title="Products Page">Products Page</a>
	<ul>
		<li class="page_item page-item-101"><a href="https://www.steve.doig.com.au/wordpress/products-page/transaction-results/" title="Transaction Results">Transaction Results</a></li>
		<li class="page_item page-item-100"><a href="https://www.steve.doig.com.au/wordpress/products-page/checkout/" title="Verify your Order">Verify your Order</a></li>
		<li class="page_item page-item-102"><a href="https://www.steve.doig.com.au/wordpress/products-page/your-account/" title="Your Account">Your Account</a></li>
	</ul>
	</li>
	<li class="page_item page-item-105"><a href="https://www.steve.doig.com.au/wordpress/winmysqladmin-deprecated/" title="WinMySQLAdmin deprecated">WinMySQLAdmin deprecated</a></li>
</ul>