{section name=aa loop=$MainLinks} { if $MainLinks[aa].2 eq "1" }
{$MainLinks[aa].0}

{section name=bb loop=$ChildLinks} { if $ChildLinks[bb].2 eq $smarty.section.aa.index }
  {$ChildLinks[bb].0}

{/if} {/section} {else}
{/if} {/section}