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          {navigator type=1 pid=7 return=n1}
          <li>
            <a href="{$n1.url}" class=" {if MOD_DIR==$n1.mark}active{/if}">{$n1.name}{if $n1.thumb}<i><img src="{dr_get_file($n1.thumb, 100, 12, 0, 'height')}" alt=""></i>{/if}</a><span class="nav-click"><span class="caret"></span></span>
            {if $n1.child}
            <ul class="nav-down">
            {navigator type=1 pid=$n1.id return=n2}
              <li><a href="{$n2.url}" class=" {if MOD_DIR==$n2.mark}active{/if}">{$n2.name}</a></li>
            {/navigator}
            </ul>
             {/if}
          </li>
          {/navigator}

這段點(diǎn)誰知道怎么調(diào)用 當(dāng)有二級(jí)菜單的時(shí)候就下面這樣顯示

          {navigator type=1 pid=7 return=n1}
          <li>
            <a href="{$n1.url}" class=" {if MOD_DIR==$n1.mark}active{/if}">{$n1.name}{if $n1.thumb}<i><img src="{dr_get_file($n1.thumb, 100, 12, 0, 'height')}" alt=""></i>{/if}</a><span class="nav-click"><span class="caret"></span></span>
            {if $n1.child}
            <ul class="nav-down">
            {navigator type=1 pid=$n1.id return=n2}
              <li><a href="{$n2.url}" class=" {if MOD_DIR==$n2.mark}active{/if}">{$n2.name}</a></li>
            {/navigator}
            </ul>
             {/if}
          </li>
          {/navigator}

如果沒有的情況就

          <li>
            <a href="{$n1.url}" class=" {if MOD_DIR==$n1.mark}active{/if}">{$n1.name}{if $n1.thumb}<i><img src="{dr_get_file($n1.thumb, 100, 12, 0, 'height')}" alt=""></i>{/if}</a>
          </li>

主要是在頂級(jí)菜單的后面

<span class="nav-click"><span class="caret"></span></span>

這個(gè)HTML 是只在有的情況下才顯示，沒有就不顯示