Use {{ location.here }} variable to know which page you're viewing

gistfile1.txt

<koken:if data="location.here" equals="/">
<!-- We're on the home page -->
</koken:if>

<koken:if data="location.here" equals="/albums/">
<!-- We're on the albums index -->
</koken:if>

<koken:if data="location.here" equals="/albums/portraits/">
<!-- We're on the portraits album page -->
</koken:if>