[jQuery] Problem with double submit of and form

[jQuery] Problem with double submit of and form


Hello,
the code bellow shows my problem. I have a link, when i click on this
link
the DIV with the Form slide in. This works.
But when I submit the form the result was executed twice. And I Don't
know why.
When I leave the code for slide in the form, the form was submited
only once.
Why jQuery submited this form twice??? Any idea?
<a href="javascript:void(0)" id="testlink">Show Test</a>
<div id="tpanlegen" style="width: 100%; display: none;">
<form id="teilprojekt_create" action="/test.action" method="post">
<select name="test" id="test" class="textfeld" style="width:
100%;">
        <option value="1950">Test 1</option>
        <option value="2000">Test 2</option>
    </select>
    <input id="tpcsubmit" value="Submit" type="submit">
    <script type="text/javascript">
    $(document).ready(function () {
         var optionstpcsubmit = {
            beforeSubmit: before_tpcsubmit,
            success: complete_tpcsubmit,
            timeout:     3000,
            target: '#target'
         };
     $('#tpcsubmit').closest("form").submit(function() {
            $(this).ajaxSubmit(optionstpcsubmit);
            return false;
        });
        function before_tpcsubmit() {
        $('#inicator').show();
        }
        function complete_tpcsubmit() {
            $('#inicator').hide();
            $("#target").effect("slide",{ },2000);
        }
    });
    </script>
    </form>
</div>
<script type="text/javascript">
$(document).ready(function () {
    $('#testlink').bind(
    'click',
    function(e){
$("#tpanlegen").effect("slide",{ },2000
     );
    });
});
</script>
Best Regards
Johannes Geppert
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