Paul Grenier of EndUserSharePoint.com has written a jQuery script that allows a user to expand all grouped by instances with one click, as a response to a question I asked on the Stump The Panel forum. I loved the script so much I decided to package it for easier use and distribution and put it on my SharePointology project on Codeplex.com.
It is a feature called SPOCollapseAndExpandAll, it is a jQuery feature that adds a + and – to the menu bar of the document/list libraries to Expand/Collapse all grouped by’s with one click. days.
Download SPOExpandAndCollapseAll v1.0.
This webpart needs jQuery to be added to your SharePoint pages.