Redmine

                         :complete => "apply_filters_observer()",

function apply_filters_observer() {

  $$("#query_form input[type=text]").invoke("observe", "keypress", function(e){

    if(e.keyCode == Event.KEY_RETURN) {

      <%= remote_function(:url => { :set_filter => 1},

                          :update => "content",

                          :with => "Form.serialize('query_form')",

                          :complete => "e.stop(); apply_filters_observer()") %>

    }

  });

}

Event.observe(document,"dom:loaded", apply_filters_observer);