[Jean le Chauve]

J'ai essayé {if $node->menutext == 'Infos adhérents'} mais ça ne fonctionne pas...

ça fonctionne parfaitement si le "texte du menu" est Infos adhérents...
Le problème est qu'on ne sait pas si ta page info adhérents est parente, avec ou sans enfants ou si elle est enfant.
Voilà le gabarit left simple navigation + 1 col qui reprend tous les cas (sauf section header et separator) :

Code :

{* CSS classes used in this template:
.activeparent - The top level parent when a child is the active/current page
li.active0n h3 - n is the depth/level of the node. To style the active page for each level separately. The active page is not clickable.
.clearfix - Used for the unclickable h3 to use the entire width of the li, just like the anchors. See the Tools stylesheet in the default CMSMS installation.
li.sectionheader h3 - To style section header
li.separator - To style the ruler for the separator *}

{assign var='number_of_levels' value=10000}
{if isset($menuparams.number_of_levels)}
  {assign var='number_of_levels' value=$menuparams.number_of_levels}
{/if}

{if $count > 0}
<ul>
{foreach from=$nodelist item=node}
{if $node->depth > $node->prevdepth}
{repeat string="<ul>" times=$node->depth-$node->prevdepth}
{elseif $node->depth < $node->prevdepth}
{repeat string="</li></ul>" times=$node->prevdepth-$node->depth}
</li>
{elseif $node->index > 0}</li>
{/if}

{if $node->parent == true or $node->current == true}
  {assign var='classes' value='menuactive'}
  {if $node->parent == true}
    {assign var='classes' value='menuactive menuparent'}
  {/if}
  {if $node->children_exist == true and $node->depth < $number_of_levels}
    {assign var='classes' value=$classes|cat:' parent'}
  {/if}
{if $node->menutext == 'Infos adhérents'}
  <li class="{$classes}"><a class="{$classes}" href="{$node->url}"><span>{$node->menutext}{last_blog}</span></a>
{else}
<li class="{$classes}"><a class="{$classes}" href="{$node->url}"><span>{$node->menutext}</span></a>
{/if}

{elseif $node->children_exist == true and $node->depth < $number_of_levels and $node->type != 'sectionheader' and $node->type != 'separator'}
{if $node->menutext == 'Infos adhérents'}
  <li class="parent"><a class="parent" href="{$node->url}"><span>{$node->menutext}{last_blog}</span></a>
{else}
<li class="parent"><a class="parent" href="{$node->url}"><span>{$node->menutext}</span></a>
{/if}
{elseif $node->current == true}
{if $node->menutext == 'Infos adhérents'}
  <li class="currentpage"><h3><span>{$node->menutext}{last_blog}</span></h3>
{else}
<li class="currentpage"><h3><span>{$node->menutext}</span></h3>
{/if}
{elseif $node->type == 'sectionheader'}
<li class="sectionheader"><span>{$node->menutext}</span>

{elseif $node->type == 'separator'}
<li class="separator" style="list-style-type: none;"> <hr />

{else}
{if $node->menutext == 'Infos adhérents'}
  <li><a href="{$node->url}"><span>{$node->menutext}{last_blog}</span></a>
{else}
<li><a href="{$node->url}"><span>{$node->menutext}</span></a>
{/if}
{/if}

{/foreach}
{repeat string="</li></ul>" times=$node->depth-1}</li>
</ul>
{/if}