How can I do two actions at the same time with one form and one submit button?

<script>
function test(){
      document.forms['write_action'].action='Address1';
      document.forms['write_action'].target='_blank';
      document.forms['write_action'].submit();

      document.forms['write_action'].action='Address2';
      document.forms['write_action'].target='_self';
      document.forms['write_action'].submit();

}
</script>

<form method="post" id="write_action">
<input type="submit" onclick="test()">
</form>