[GrandHolyKing]

Also, I had to edit your code in order to display a custom button to match in with the forum.

If anyone needs to do the same, change these values to those of your forum buttons (I used the custom english button from TimberFloorAu a few posts up, lovely work by the way)

Change the red values to match your own buttons as it resizes a custom image up to those values.

<a href="javascript:void(0);" 
onclick="get_id('post_message_$post[postid]','en','fm');">
  <img src="images/misc/speech.png" alt="" width="123" height="37" border="0" 
style="margin-right:0.4em;"/></a>

In my case the values were changed to 61 and 21 respectively.

Very promising mod, nominated for MOTM but I need to sort the browser issue.

Also if using any custom button you or someone else makes, remember to rename it to speech.png (Or change the above code to match your image location)