Multiple actions from one form - possible?

Not that I have tested this, but....

I suspect the "submit_action" values are clobbering each other when
parsed.

Try putting them in two different forms, and I am not sure if that name
will work.

<form action="../item/item_manage" method="POST">
  <input id="Add" name="submit[action]" type="submit" value="Add">
</form>
<form action="../item/item_manage" method="POST">
  <input id="Delete" name="submit[action]" type="submit"
value="Delete">
</form>