[Rails] Another layout question - Layouts on a per method basis - Layouts with AJAX

[softwareengineer 99]

 I feel I am very close to understanding how layouts are used in Rails:
  
  Q1. I know one can specify a "default" layout for all methods in a controller by specifying 
  layout 'my-default-layout' 
  
  How can this be overridden for individual methods so when those methods  are called/executed, the overridden layout will be used. Is this  possible?
  
  
  Q2. With no "default" layout specified, I tried to use the following for a method:
      render (:layout =>  'custom-layout-for-method')
  and
      render_component(:action => 'login', :controller=>'member', :layout=>'custom-layout-for-method')
  
  but the page is rendered with no layout. Can anyone please explain why  no layout was used? How can I make it use a custom layout on a per  method basis?
  
 Q3. I am displaying paginated results for the  list action of tags controller. This page already has a layout defined.  Everything works fine. Now, I am interested in implementing the  ajax_pagination_links (http://www.bigbold.com/snippets/posts/show/386).  However since the layout has already been defined, every time I click  on the page number, the entire page including the header is loaded  again within my div. I cannot find how I can turn off the layout  conditionally or alltogether only for subsequent calls.
  Since my @resource_pages collection  is retrieved in a method that  has a layout defined "globally" how can I turn off the header for  subsequent pages only? I hope I am making sense here.
  
  
  Thank you for making me a part of this wonderful community.
  
  Frank
  

			
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