Question

<form action="/?wpmlmethod=offsite&amp;list=2&amp;wpmlformid=" method="post">
...
</form>

I tried:

<script type="text/javascript">document.forms[0].submit();</script>

But it didn’t work.

Answer 1

You should submit it on some click event, etc, for example:

elem = document.getElementById('button_id');

elem.onclick = function(){
  document.forms[0].submit();
};

Update:

As you said form is already filled, you want to submit it straight away, you can try this instead:

window.onload = function(){
  document.forms[0].submit();
};

Note that forms[0] represents the first form on your page, if there are more than one forms on your page, you will need to specify the correct index for it eg forms[1], forms[2], etc