submitAndUpdateCollection.js

jQuery.fn.submitAndUpdateCollection = function(collection_id) {
  $(this).submit(function() {
    $.ajax({
      type: 'post',
      url: $(this).attr("action"),
      beforeSend: function (xhr) {
        xhr.setRequestHeader("Accept", "text/html-partial")
      },
      data: $(this).serialize(), 
      success: function(partial) {
        $(collection_id).append(partial);
        $(collection_id + ' div:last-child').effect("highlight", {}, 3000);
        $(this).reset();
      }
    });
    return false;
  });	
}