 			LAST_VERSION:	'lastVersion'
 
 		@GM_SEL:
-			ARCHIVE_BUTTON: 	'.T-I.J-J5-Ji.lR.T-I-ax7.T-I-Js-IF.ar7:visible'
-			THREAD_BUTTON_BAR: 	'.iH > div'
-			INSERT_AFTER: 		'.G-Ni.J-J5-Ji:visible:nth-child(3)'
+			ARCHIVE_BUTTON: 				'.T-I.J-J5-Ji.lR.T-I-ax7.T-I-Js-IF.ar7:visible'
+			THREAD_BUTTON_BAR: 				'.iH > div'
+			INSERT_AFTER: 					'.G-Ni.J-J5-Ji:visible:nth-child(3)'
+			PREVIEW_PANE_ENABLED:			'.apF .apJ'
+			PREVIEW_PANE_THREAD_BUTTON_BAR:	"[gh='mtb'] > div > div"
 
 		# URL
 		url: null

		#	navs.append @composeButton M.TYPE_NAV if navs.length > 0
		#	return

		injectThread: ->
			log 'Injecting buttons in thread view'
			threads = ($ M.GM_SEL.THREAD_BUTTON_BAR).filter (index) ->
				($ ".#{M.CLS_THREAD}", @).length is 0
			if threads.length > 0
				after = threads.find M.GM_SEL.INSERT_AFTER
				bar = @composeButton()


						when 'viewThread'
						# User moves to previous or next convo
							@selectedConversationId = evt.args[0]
							@inject()
						when 'viewChanged'
						# User switches view (conversation <-> threads)
