socialforge/app/views/words/_new_respond_course.html.erb

<%= form_tag(words_create_reply_path, :remote => true,:id=>"form_#{journal.id}") do %>
    <%= text_area_tag 'user_notes', "", :class => 'w520 h50 mb5',
                      :style => "resize: none;overflow: hidden;",:rows => 4,
                      :placeholder => l(:label_feedback_respond_content)#,

                      #:maxlength => 250
    %>
    <p nhname="contentmsg"></p>
    <%= hidden_field_tag 'reference_id', params[:reference_id], :value => journal.id %>
    <%= hidden_field_tag 'reference_user_id', params[:reference_user_id], :value => m_reply_id.user.id %>
    <%= hidden_field_tag 'reference_message_id', params[:reference_message_id], :value => m_reply_id.id %>
    <%= hidden_field_tag 'show_name',params[:show_name],:value => show_name.nil? ? true : show_name %>

    <div class="fl" style="padding-top:5px;" nhname="toolbar_container"></div>
    <%= submit_tag l(:button_feedback_respond), :name => nil ,
                   :class => "reply_btn" ,:onclick=>"form_sub_#{ journal.id}($(this),event)"%>
    <input nhname="cancel_btn" type="button" style="display:none;"/>
<% end %>
<script>
  var flag_<%= journal.id %> = false;
  function form_sub_<%= journal.id%>(dom,event){
      if(flag_<%= journal.id %> == true){
          //dom.attr('disabled','disabled');
          return;
      }else{
          //dom.removeAttr('disabled');
      }
      flag_<%= journal.id %> = true;
      $("#form_<%= journal.id%>").submit();
      event.preventDefault();
  }
</script>