checking the upload state with JS

uploadstate.js

<% form_for :lesson, @lesson, :url => {:action => "create"}, :html => { :multipart => true } do |form| %>
Nome: <%= form.text_field :name %><br/>
Descricao <%= form.text_field :description %><br/>                                               
Video: <%= form.file_field :video %><br/>                                                        
<%= form.hidden_field :uuid, :value => @uuid%>
<%= form.submit %>
<% end %>                                                                                        
<div id="teste"></div>                                                                           
<script type="text/javascript">                                                                  
    $("form").submit(                                                                            
            $("form").submit();                                                                  
            function() {                                                                         
                alert($("#teste").length);                                                       
                $(document).everyTime(500,                                                       
                    function(){                                                                  
                        $.getJSON("http://myserver.com/progress?X-Progress-ID="+$('#lesson_uuid').val(),
                            function(data){
                                //if(data.state == 'uploading')
                                    $("#teste").text("state:" + data.state);
                            }
                        )
                    }
                );
                return false;
            }
     );
</script>