{function selectTree}
   {foreach $data as $entry}
      <option value="{$entry.id}" {$entry.id|selected:$selected} {if $entry.id == $disabled_id || $disabled_all}disabled{/if}>{for $sp=1 to $entry.level}-&nbsp;&nbsp;{/for}{$entry.title}</option>
      {if !empty($entry.submenu)}
         {if $entry.id == $disabled_id || $disabled_all}
            {selectTree data=$entry.submenu selected=$selected disabled_id=$disabled_id disabled_all=true}
         {else}
            {selectTree data=$entry.submenu selected=$selected disabled_id=$disabled_id disabled_all=false}
         {/if}
      {/if}
   {/foreach}
{/function}