[den33000]

Open your AdminCP Custom BB Codes => Add New BB Code
Title: Spoiler
BB Code Tag Name: Spoiler
Replacement:

<div style="padding: 0px 5px 0px 5px;  border: 1px solid #DF7401; margin-left: 20px; width: 40%"><div align="center" style="text-transform: none; border-bottom: none; display: block; padding: 3px 0px 3px 0px;">
<span onClick="var spoiler = this.parentNode.parentNode.getElementsByTagName('div')[2];
  if (spoiler.style.display != ''){
    this.parentNode.parentNode.style.width = '80%'
    this.parentNode.style.borderBottom = '1px solid #CCCCCC';
    spoiler.style.display = '';
    this.getElementsByTagName('a')[0].innerHTML = '->Close Spoiler<-';
  }else{
    this.parentNode.parentNode.style.width = '40%'
    this.parentNode.style.borderBottom = 'none';
    spoiler.style.display = 'none';
    this.getElementsByTagName('a')[0].innerHTML = '->Open Spoiler<-';
  }" />
<a rel="nofollow" href="#" onClick="return false;" style="text-decoration: none;"><b style="font-size: 0.8em;">->Spoiler öffnen<-</b></a>
</span>
</div>
<div class="quotecontent">
<div align="center" style="display: none; padding: 5px 0px 5px 0px;"><br> {param}</div>
</div>
</div><br />

Example:

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Hidden Text Here

Description: The [SPOILER]-Tag allows you to hidden or hide your text.
Use {option}: No
Button Image (Optional) => Upload this Picture on you Server and enter the exact Address of it (/images/ is recommended).
Remove Tag If Empty: Yes
Disable BB Code Within This BB Code: No
Disable Smilies Within This BB Code: No
Disable Word Wrapping Within This BB Code: No
Disable Automatic Link Parsing Within This BB Code: No