rubyonrailsin

Hi All,

I got RJS error: TypeError: element is null while using ajax.

I used in view

<%= periodically_call_remote(:url=>{:action=>'get_user_list', :id=>'1'},
:frequency => '5') %>

in controller

render :update do |page|
page.replace_html 'chat_area', :partial => 'chat_area', :object
=> [@chats, @user] if @js_update
end

in partial chat_area

<% if !@chats.blank? && !show_div(@chats).blank?%>
<% show_div_id=show_div(@chats) %>
<% for chat in @chats %>
<div class="popup" id="chat_area_<%= chat.id %>"
style="display:<%= (chat.id == show_div_id)? 'block' : 'none' %>;">

<% form_remote_for(:chat, :url => {:controller=>'chats',
:action=>'create', :id=>1}, :html=>{:name => "form_#{chat.id}"},
:complete=>"resetContent('#{chat.id}');") do |f| %>
<div style="display:none;">
<%= f.hidden_field :sessionNo, :value=>chat.sessionNo %>
<%= f.text_area :chatContent, :id=>
"chatContent_field_#{chat.id}", :cols=>"100", :rows=>"6",
:onKeyPress=>"return submitenter(this,event);" %>
</div>
<input type="image" src="images/chat/send-hover.png"
value="Send" onclick="return submit_button('<%= chat.id %>')"/>
<% end %>
</div>

</div>
<% end %>

<% else %>
<div class="popup" id="chat_area_none" style="display:'block';">
<input type="image" disabled ="disabled"
src="images/chat/send.png" style="cursor:default;" value="Send" />
</div>
<% end %>

Any help is appreciated.

Regards,

Salil Gaikwad
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