<div class="navigation_bar">
    {if $smarty.post.f != ''}
        <div style="float:left">
            <input id="btn_back" type="button" value="{API->get_label label_id='lbl_start_over'}" onclick="javascript:window.location.href='index.php';" />
        </div>
    {/if}
    <div>
        {if $smarty.post.f != 'complete'}
            <input id="btn_next" type="submit" value="{API->get_label label_id='lbl_btn_next'}" />
        {else}
            <input id="btn_next" type="button" onclick="javascript:location.href='../'" value="{API->get_label label_id='lbl_btn_done'}" />
        {/if}
    </div>
</div>