<ol class="breadcrumb">
    <li>Home</li>

    {foreach key=crumb_name item=crumb_value from=$crumb name=breadcrumb}
        <li><a {if $smarty.foreach.breadcrumb.last == true}class="active"{else}href="{$crumb_value}"{/if}>{$crumb_name}</a></li>
    {/foreach}
</ol>