Ajax-y link disabling in Rails.

gistfile1.htm

<!-- 
  Imitate <%= submit_tag 'Perform an Action', :disable_with => "" %> button 
  using Rails' remote_function options.

  Requires prototype.js, but could easily be written with any other js framework.

  Not production tested.
--> 

<span id='my_link'>
  <%= link_to_remote "Perform an Action",
      :url => { :controller => 'mycontroller', :action => 'ajax_action', :id => @this_item.id },
      :before => "$('my_link').hide();$('my_message').show();",
      :success => "$('my_link').show();$('my_message').hide();" %>
</span>
<span id='my_message' style='display:none'>
  Loading...
</span>