gistfile1.rhtml

<% form_tag :search, :url => asdf, :html => { :id => 'search_form' } do %>
  <%= text_field_tag :search %>
  <%= submit_tag 'zoeken' %>
<% end %>
<div id="search_results"></div>

$('#search_form').live('submit', function(event) {
  event.preventDefault();
  $.post($(this).attr('action'), $(this).serialize(), null, 'script');
});


def search
  @results = ....

  render :update do |page|
    page.alert 'hohoho'
    page.replace_html 'search_results', :partial => 'results'
  end
end