spoiler tags?

[rowlandc]

I've found this code in a source code on www.narutofan.com:

What would I have to change so I can use it?

<div style="margin:20px; margin-top:5px">
<div class="smallfont" style="margin-bottom:2px"><b>Spoiler</b>: <input type="button" value="Show" style="width:45px;font-size:10px;margin:0px;padding:0px;" onClick="if (this.parentNode.parentNode.getElementsByTagName(' div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('d iv')[1].getElementsByTagName('div')[0].style.display = ''; this.innerText = ''; this.value = 'Hide'; } else { this.parentNode.parentNode.getElementsByTagName('d iv')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value = 'Show'; }">
</div>
<div>


<div style="display: none;">
Its pretty much Hannibal having a tragic past in WWII against the Nazis. A tale about his love for his baby sister, revenge against those that killed her through cannibalism. His early methods of killing, taste for human flesh, his early days of interest in the human body as a student. With a sprinkle of Japanese background taught by his aunt. He goes revenge ninja style on one guy.
</div>
</div>
</div></div>

The source code come from http://forums.narutofan.com/showthre...50#post6980150