Submitting thread rating via image button

[ForumDog]

Sounds simple...quite possibly is simple...the idea is to submit a thread rating via clicking on the appropriate rating image rather than via a radio button, then clicking the vote button.

Nested inside the various rating form necessities is this:

<input type="image" src="rating_foo.gif" title="$vbphrase[foo]" name="vote3" id="vote3" value="3" class="inlineimg" />

All works fine in Firefox and submits the rating value perfectly. The problem is with IE and surprisingly, Opera. IE and presumably the latter doesn't submit the information properly, it appends a position as if it were an image map deal.

I already know the workaround, which is if you are using:

if($_POST['submit']){
   broken foo
}

To change it to:

if($_POST['submit_x']){
   working foo
}

The _x taking care of the appended data.

And having poked around threadrate.php and the clientscript, I've completely failed to manage this. I've tried every javascript workaround in the book, all failures. I believe I'm well beyond the point at which I can't see the forest for the trees so please, if anyone can tell me what I'm doing wrong or what to do right I'd be eternally grateful.

Thank you!