Redirected to inlinemod.php

[Spit-wad]

Moderators are being redirected to inlinemod.php when clicking on new bbcodes I have created.

It works perfectly for users who are not able to edit the thread or are not logged in, but moderators are instead redirected where a message is returned "Invalid Action Specified"

Here is the BBCODE:

<div style="margin: 5px;">
<div class="vod" style="margin-bottom: 2px;">
<input type="image" src="[redacted]"
onmouseover="this.src = '[redacted]';"
onmouseout="this.src = '[redacted]';"
onclick="if(this.parentNode.parentNode.getElements ByTagName('div')[1].getElementsByTagName('div')[0].style.display != 'inline')
{ this.parentNode.parentNode.getElementsByTagName('d iv')[1].getElementsByTagName('div')[0].style.display = 'inline'; this.innerText = ''; this.value = 'Hide'; }
else { this.parentNode.parentNode.getElementsByTagName('d iv')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value='Show'; }" type="button"> </div>
<div class="alt2" style="padding: 0px;">
<div class="spoiler" style="display: none;">{param}</div> </div></div>

The function is the same as a normal spoiler tag, which works fine:

<div style="margin: 5px;">
<div class="smallfont" style="margin-bottom: 2px;">
<b>Spoiler</b> <input value="Show" style="margin: 0px; padding: 0px; width: 45px; font-size: 10px;" onclick="if(this.parentNode.parentNode.getElements ByTagName('div')[1].getElementsByTagName('div')[0].style.display != 'inline')
{ this.parentNode.parentNode.getElementsByTagName('d iv')[1].getElementsByTagName('div')[0].style.display = 'inline'; this.innerText = ''; this.value = 'Hide'; }
else
{ this.parentNode.parentNode.getElementsByTagName('d iv')[1].getElementsByTagName('div')[0].style.display = 'none'; this.innerText = ''; this.value='Show'; }" type="button">
</div>
<div class="alt2" style="border: 1px inset; padding: 6px;">
<div class="spoiler" style="display: none;">{param}</div>
</div>
</div>

All I have done is tried to improve the aesthetics by using an image and a hover image. Any ideas why moderators are being redirected? How can I fix it?