PhoneGap Alert Notification firing multiple times

Question

I've implemented the notification alert in an iphone project using phonegap. I've tried the direct, quick, and full examples listed on their api page: http://docs.phonegap.com/phonegap_notification_notification.md.html

The problem is that when the event fires, it fires multiple times. Twice on iphone 3gs, and 3 times on iphone 3g. I'm calling in an if else event like so:

if($('input:radio:checked').length == count) {
<!-- ... -->
} else { showAlert(); return true; }

have also tried { showAlert(); }, and putting the whole function in there... but every time - the event fires twice when run on the device. Meaning I have to dismiss the alert once, and then once more.

Is there something I can add to ensure it only sends one alert?

example code in header (js):

function showAlert() {
    navigator.notification.alert(
        'Please answer all questions.',  // message
        'Almost there!',            // title
        'Okay'                  // buttonName
    );
}

example code in body (alongside form):

<!-- form body... -->
<span class="btncontainer"><input href="#" type="button" value="Click to see your results" class="btn" onclick="getProduct();"></span>
  </form>
  <script type="text/javascript" charset="utf-8">
  function getProduct() {
    //check the form has been filled completely
    var names = {};
    $('input:radio').each(function() { // find unique names
          names[$(this).attr('name')] = true;
    });
    var count = 0;
    $.each(names, function() { // then count them
          count++;
    });
    if($('input:radio:checked').length == count) {
    // Form has been completed  
        // Get scores
        var $radio1 = $('input[name=q1]:checked');
            var a1 = $radio1.val();
        var $radio2 = $('input[name=q2]:checked');
            var a2 = $radio2.val();
        var $radio3 = $('input[name=q3]:checked');
            var a3 = $radio3.val();
        var $radio4 = $('input[name=q4]:checked');
            var a4 = $radio4.val();
        var $radio5 = $('input[name=q5]:checked');
            var a5 = $radio5.val();
        // Calculate the scores
        var userCalc = parseInt(a1) + parseInt(a2) + parseInt(a3) + parseInt(a4) + parseInt(a5);
        // Suggest a product based on scores
        if (userCalc <= 99) {
            jQT.goTo("#ocn", "dissolve");
        } else if (userCalc <= 199) {
            jQT.goTo("#otetof", "dissolve");
        } else if (userCalc <= 399) {
            jQT.goTo("#ocd", "dissolve");
        } else if (userCalc <= 999) {
            jQT.goTo("#odtcfm", "dissolve");
        } else if (userCalc <= 4999) {
            jQT.goTo("#orsc", "dissolve");
        } else if (userCalc <= 30000) {
            jQT.goTo("#otes", "dissolve");
        } else {
            alert(userCalc);
        }
    } else { showAlert(); return true; }
    // End functions
  }
  </script>