>I certainly could not see the behaviour. Down-arrowing to a listed item and hitting enter completed the text box but did not trigger the submit. Hitting Enter again submitted the form:

   <form id="form1" runat="server">
>        <input id="Text1" type="text" onkeypress="return handleKeyPress(event)" /><br />
>      <script type="text/javascript">
>        function handleKeyPress(event)
>        {
>          // return event.keyCode != 13;
>          return true;
>        }
>      </script>
>      <input id="Submit1" type="submit" value="submit" />
>    </form>

Yes, but, I still need to find out what was causing this. It might have been with another browser. I tried three this week. Maybe one of them is bypass this behavior.