36859
Here:
Add this to your headers:
<script src='http://FORUM_URL.smfforfreeX.com/jquery.js'></script>
Where FORUM_URL, replace with your own forum URL.
Where X, replace with your server number.
Footers
<script>
b = document.getElementsByTagName("div");
for(x=0;x<b.length;x++){
if(b[x].className=="post" && b[x].innerHTML.match(/\[spoiler\](.*)\[\/spoiler\]/i)){
b[x].innerHTML = b[x].innerHTML.replace("[spoiler]"+RegExp.$1+"[/spoiler]","<div><div><a href='javascript:void(0)' onclick='$(this).parent().next().toggle()'>(Click to Show/Hide Spoiler)</a></div><div style='display:none' id='spoiler'>"+RegExp.$1+"</div></div>");
};};
</script>
Just place [spoiler]YOUR TEXT HERE[/spoiler] to create the spoiler.

Preview:
http://codepreview.smfforfree3.com/index.php/topic,3.0.html/EDIT: Removing broken link... -- Blade