Index: typo3conf/ext/workspaces/Resources/Public/JavaScript/workspacemenu.js
===================================================================
--- typo3conf/ext/workspaces/Resources/Public/JavaScript/workspacemenu.js	(revision 3476)
+++ typo3conf/ext/workspaces/Resources/Public/JavaScript/workspacemenu.js	(revision )
@@ -48,7 +48,6 @@
 			}
 			this.positionMenu();
 			Event.observe('workspace-selector-menu', 'click', this.toggleMenu);
-			Event.observe('frontendPreviewToggle', 'click', this.toggleFrontendPreview.bind(this));
 			Event.observe('goToWsModule', 'click', this.goToWorkspaceModule.bind(this));
 
 			// observe all clicks on workspace links in the menu