{* category navigation tree *}
{section name=i loop=$categories_tree}
{if $categories_tree[i].categoryID != 1}
{section name=j loop=$categories_tree max=$categories_tree[i].level-1}
{/section}
{if $categoryID == $categories_tree[i].categoryID}
{* selected node => point category and don't make a link *}
{$categories_tree[i].name}
{else}
{* not selected node => make a link to a category *}
{if $categories_tree[i].level > 1}{$categories_tree[i].name}
{else}
{$categories_tree[i].name}{/if}
{/if}
{/if}
{/section}