SharePoint have a build in trashcan that works in two levels.. first
level is for the user. Go to the websites settings page, to find the
trashcan. If its gone there, log on as a administrator and go to the
site collections trashcan and try and find it.
Be aware that this functionality can be turned off.
Only items will be putted in the trashcan. If you delete a subweb.. it
all gone.
Best regards
Brian Nielsen
http://www.bknnet.dk/