Submit by Javascript in Joomla module - Joomla! Forum - community, help and support

i have developed module. has form listbox, , want write onclick events list, submit current form.
but code: document.myform.submit(); doesn't seems work, although try thousand times outside joomla , works well.

here code:

code: select all

<?php
   defined('_jexec') or die( 'restricted access' );
?>

<script type="text/javascript">
   function submitform(){
      alert("test javascript 1");          //this code works well
      document.ticketlist.submit();
      alert("test javascript 2");          //but line doesn't
   }
</script>

<form name="ticketlist" action="view-ticket" method="post">
     <select name="listbox" size="8" onclick="submitform()" style="width: 500px">
         <option value = "aaa">aaa</option>
         <option value = "bbb">bbb</option>
     </select>
</form>


can me? in advance.

p/s:
a submit button:

code: select all

<input class="button" type="submit" name="submit" value="submit">

works well.
a link javascript:

code: select all

<a href="javascript:document.ticketlist.submit()">submit link</a><br />

doesn't work...

this thing makes me mad!!!