Using this plugin one can easily collapse/expand pages with children and grand children.
Simple plugin that allows you to collapse subpages in the Pages admin list also for custom post types that are heirarchial. Especially helpful if you have a ton of pages /cpt's with heiararchial set to true. It uses a cookie to save the expand/collapse status of your pages.
This is loosely based on Collapse Sub-Pages by Dan Dietz, which broke with the 3.0 upgrade due to UI changes and hasn't been updated. I've had to rewrite the jQuery to make it work with 3.x versions.
Because this is a jQuery, it's possible that they could make additional changes that would break it. I'll do my best to stay on top of it, but let me know if it stops working.
What's new in Version 2.0 ?
1)Fix en-queuing of scripts . 2)Expand all , Collapse all links appear only on the pages list not on every list (like plugins ,posts etc.,) 3)Updated jQuery.cookie.js to 1.4.0