How to select form action?

How to select form action?

Hi, I got form with ID submit:

<form id=submit method="post" action="" target="_blank">
...
</form>


and I'm trying to select action of the form so that I can append a link to it. I've tried:

$("link.php").appendto(("#submit").action);
$("#submit).action.append.("link.php");


Neither of them works. I can't figure how to select action of the form. Please help and thanks in advance.