Project DescriptionToggle the SharePoint 2010 user interface between the new SharePoint 2010 user interface and SharePoint 2007 user interface.
InstallationDownload the latest version
hereUnzip the ToggleSharePointUI.zip
Open
SharePoint 2010 Management Shell from
Start | All Programs | Microsoft SharePoint 2010 Products
Change the current location to where ToggleSharePointUI.zip was extracted
Execute the Install.ps1 by typing .\Install.ps1 and pressing Enter

Once the installation is completed successfully, you should see the following message

Browse to the web where you want to activate the Toggle UI and go to
Manage Site Features ( Site Actions | Site Settings | Manage site features )
Find the
Toggle SharePoint User Interface and activate the feature

Click on
Site Actions menu. The
Toggle Visual Mode option is now available for the web

Click on
Toggle Visual Mode to switch to SharePoint 2007 user interface

Notice you still have the SharePoint 2010 out of the box
Visual Upgrade options enabled

Click again on
Site Actions | Toggle Visual Mode to switch to SharePoint 2010 user interface