jquery form plugin

Question

I am trying to use jquery.form.js and for some reason I am unable to call my php script. At least I can't tell if I am or not. What does it look like I am doing this incorrectly?

    $('#profilepicbutton').live('change', function(){
    $("#preview").html('');
    $("#preview").html('<img src="loader.gif" alt="Uploading...."/>');
        $("registerpt3").ajaxForm({
            target: '#preview'
            }).submit();                
    });

The Form...

    <form  id="registerpt3" action="register3.php" method="post">
         <input name="profilepicinput" type="file" id="profilepicbutton"  />
         <button type="submit" class="button">Save</button>
    </form>

I never seem to call my php function. Which is corectly labeled above. How do you call an action using Jquery.Form.js? Am I doing this incorrectly?

Answer 1

$("registerpt3").ajaxForm({

...should be...

$("#registerpt3").ajaxForm({