OH!!! Okay!
Here is the new replacement code (150px also...) All you need to do is edit the code where it says "***URL HERE***" and change it to the full URL of the image.
Replacement:
Code:
<div>
<div class="pre-spoiler">
<button style="background-image:url(***URL HERE***);width:150px;font-size:14px;margin:0px;padding:0px;" onclick="if (this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display != '') { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = '';this.innerText = ''; this.value = 'Hide'; } else { this.parentNode.parentNode.getElementsByTagName('div')[1].getElementsByTagName('div')[0].style.display = 'none'; this.value = '{option}';}">{option}</button>
</div>
<div>
<div class="spoiler" style="display: none;"><div style="border: 1px solid ;">{param}</div></div>
</div>
</div>