Change form submit action and then submit the form

Question

I'm trying to add a button to my form that would essentially run some different php code than my regular form submission code, that would, instead of emailing me the form, convert my page into a nice pdf ready to print. I have everything working except that pressing the button is giving me an error.

Firebug says :

Here's the code:

<form id="adaugareanunt" name="adaugareanunt" action="mailerPDF.php" method="post">
    <table width="535" border="0" cellspacing="2" cellpadding="3">
         <tr class="TrDark">
         //... more form code

and for the button:

<div style="text-align:right"><img src="images/print-button.png" onClick="chgAction()" width="60px" height="20px"></div>

with the script:

<script language="JavaScript" type="text/JavaScript">
    function chgAction()
        {
            document.getElementById["adaugareanunt"].action = "mailerXFDF.php";
            document.getElementById["adaugareanunt"].submit();
            document.getElementById["adaugareanunt"].action = "mailerPDF.php";

        }
</script>

Answer 1

document.getElementById["adaugareanunt"]

change to

document.getElementById("adaugareanunt")