Code. Magento Breadcrumb Question

Hi Guys,

As you may have noticed from other posts, I'm pulling together my first Magento store. Bloody hell, the skinning/templating is tough going!

Anyway, I have Magento in a sub-folder of my domain: /shop, as there is more to the site than just the store.

So I want to add an extra breadcrumb, so the Magento home becomes Online Store, and there is an additional 'Home' link which takes me to the root of the domain.

I've figured how to add a breadcrumb to the 'app/code/core/Mage/Catalog/Block/Breadcrumbs.php' file, using this code:


$breadcrumbsBlock->addCrumb('home', array(
'label'=>Mage::helper('catalog')->__('Home'),
'title'=>Mage::helper('catalog')->__('Home'),
'link'=>Mage::getBaseUrl()
));


But I don't know the syntax to make the link external from Magento itself. I've had a Googling fail on this too. Can anyone advise the best approach for this?

Ta.