Ajax Problem

Hi,

I'm using Jquery on jrails. I used ajax to submit for one textbox. I want to put an image when ajax is calling. But i'm getting problem here. Please solve my problem.Here is the part of code

<label>Prouct Category</label><br/> <%#= collection_select("product", "type_1" , product_types, "product_type","product_type") %> <%= collection_select("product", "type_1" , @product_types,"product_type","product_type") %> <%= text_field "products", "product_type", :size=>25 %> <%= submit_to_remote 'product_type','OK', :class=>'image', :url => { :controller => 'inquiries', :action => 'add_product',:id => id},:complete => "$('loading_latest').hide();", :loading => "$('loading_latest').show();" %>   <img src="/images/ajax-loading.gif" style="display:none;" id="loading_latest"/>

Thanks,   Manjula