Using if else statements

Hi All

At this site:
Lostwithiel
You can see that I have used the archive.php to create a child menu when selecting the adult category.

However, what I also want to do is when selecting a child of a category:
Lostwithiel Restaurants
As I have done here I also want to display the parent category similar to a breadcrumb.

Trouble is the way I am doing it involves hard-coding every category into the if and else statements:

<?php /* If this is a Eating Out Category */ } elseif (is_category('5')) { ?>
<div id="eatingout">
<h3>Eating Out</h3>
<p>Enjoy your food? Then Lostwithiel has a lot to offer. Recently a winner of a good food competition.</p>
<div class="subcategories">
<?php wp_list_categories("child_of=5&title_li=$listtitle"); ?>
</div>
</div>

<?php /* If this is a Restaurants Category */ } elseif (is_category('10')) { ?>
<div id="eatingout">
<h3>Restaurants</h3>
<p>Other sections in Food and Drink:</p>
<div class="subcategories">
<?php wp_list_categories("child_of=5&title_li=$listtitle"); ?>
</div>
</div>

Not very dynamic and quite lengthy in terms of shops and services. They will end up with over 50 cats.

Any ideas how I could improve this idea please?

Thanks

Rich