Make sure you select NO for unregged usergroup in the advanced BB Code Permissions mod and if necessary clear your browser cache and cookies to make sure your board sees you as logged out or use a different browser to check.
Not sure where the original spoiler code came from but I hacked it a bit to do what I wanted it to do.
Code:
<span> <span style="margin-bottom: 5px; font-weight: bold; color: #000000;"> <input type="button" value="Show" style="width:60px;font-size:10px;margin:0px;padding:0px;" onclick="if (this.parentNode.parentNode.getElementsByTagName('span')[1].getElementsByTagName('span')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('span')[1].getElementsByTagName('span')[0].style.display = '';this.innerText = ''; this.value = 'Hide'; } else { this.parentNode.parentNode.getElementsByTagName('span')[1].getElementsByTagName('span')[0].style.display = 'none'; this.value = 'Show';}"> </span> <span> <span style="border: 1px inset 0px; padding: 0 0px 0 0px; display: none;">Hides This Text</span> </span> </span>
--------------- Added [DATE]1243808367[/DATE] at [TIME]1243808367[/TIME] ---------------
Also make sure you select Yes when it asks you in each usergroup setting if you want to use the mod or allow default BB permissions for that usergroup.