<ul class="nav navbar-nav navbar-right <?php echo Wo_RightToLeft('pull-right');?>">
   <li class="dropdown">
      <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">
      <i class="fa fa-user"></i> <?php echo $wo['lang']['guest']; ?> 
      <span class="caret"></span>
      </a>
      <ul class="dropdown-menu" role="menu">
         <li>
            <a href="<?php echo Wo_SeoLink('index.php?tab1=welcome' . '&last_url=' . $wo['actual_link']);?>">
            <?php echo $wo['lang']['login']; ?>
            </a>
         </li>
         <li>
            <a href="<?php echo Wo_SeoLink('index.php?tab1=welcome' . '&last_url=' . $wo['actual_link']);?>">
            <?php echo $wo['lang']['register']; ?>
            </a>
         </li>
      </ul>
   </li>
</ul>