Prototype Form.Event

So, I have a remote form that, upon submission, displays a result and
itself again. I'd like, though, for it to clear the text field and
set the focus there when it redisplays. I've been able to get it to
focus the form properly, by setting :complete => "$
('phone_number').focus()". But, I've not been able to get it to focus
AND clear the fields. I've tried:

$('phone_number').focus();$('phone_number')..clear();
$('phone_number').focus().clear;
$('phone_number').activate();

All with no luck. Any suggestions?

I've included a more complete snippet below...

<% form_remote_tag :url => {:controller => 'phones',
                            :action => 'create'},
                   :update => 'phones',
                   :complete => "$('phone_number').focus();" do %>
  <%= text_field 'phone', 'number', {:size => 12, :value =>
(@phone.number unless @phone.nil?).to_s} %>
  <%= submit_tag "Add Phone" %>
<% end %>

the dom id is, in fact, phone_number. it's generating
id="phone_number" name="phone[number]". i don't have firebug, but i
do have the developer toolbar, and it shows absolutely nothing.

OK; turns out it wasn't a Javascript error at all. My view was
filling in the default value, when it shouldn't have been.

The Firebug suggestion really helped out, though, as its HTML
inspector made it way more obvious than just viewing source in
firefox.

Thanks!