Form nested parameters issue

Hello everyone. I'm doing something similar to the AJAX based search facility presented the Friends of ED book, but it doesn't work for non-javascript browsers, so I'm trying to improve it.

The search engine looks like: <% form_remote_tag :url => { :action => :search } do %> #For non AJAX   Search: <%= text_field "product", "search" %>   <%= submit_tag "Buscar" %> <% end %> <%= observe_field :product_title,   :frequency => 1.0,   :update => 'products',   :url => { :controller => 'store', :action=> 'search' },   :with => "'search=' + encodeURIComponent(value)" #AJAX %>

And this action checks if 'search' has something similar to any product title in the DB: def search   @products = Product.find(:all,:conditions => ["lower(title) like ?","%" + params[:search].downcase + "%"])   (...) end

Searching for "traxxas" with JS enabled works, and it prints in development.log the following: Parameters: {"search"=>"traxxas", "action"=>"search", "controller"=>"store"}

With JS disabled development.log shows: Parameters: {"commit"=>"Filter products", "product"=>{"search"=>"traxxas"}, "action"=>"search", "controller"=>"store"}

So I can't accede to "search"=>"traxxas", which is inside product, from the search action (params[:search].downcase gets nil.downcase). How can I figure this out?

Thanks in advance; Eugenio Costa.