styles/default/css/tooltip.min.css<br />

includes/js/tooltip.min.js<br />

<link rel="stylesheet" href="{$ForumAdress}styles/default/css/tooltip.min.css" />

<script type="text/javascript" src="{$ForumAdress}includes/js/tooltip.min.js"></script>

<script>
$(document).ready(function(){
    $('[data-toggle="tooltip"]').tooltip(); 
});
</script>

data-toggle="tooltip" data-placement="auto"

data-toggle="tooltip" data-placement="auto" title=""

<span class="subject_num subject_num_icon pkr-b" title="{$lang['subject_num']}">

<span class="subject_num subject_num_icon pkr-b" data-toggle="tooltip" data-placement="auto" title="{$lang['subject_num']}">