/**
	 * Deletes comment
	 *
	 * @param int       $id
	 * @param Activity  $stream
	 * @param UserTable $user
	 * @param UserTable $viewer
	 * @param bool      $silent
	 */
	private function deleteComment( $id, $stream, $user, $viewer, $silent = false )
	{
		global $_PLUGINS;

		$row	=	new CommentTable();

		$row->load( (int) $id );

		if ( ( ! $row->get( 'id' ) ) || ( ( $viewer->get( 'id' ) != $row->get( 'user_id' ) ) && ( ! CBActivity::isModerator( (int) $viewer->get( 'id' ) ) ) ) ) {
			header( 'HTTP/1.0 404 Not Found' );
			exit();
		}

		if ( ! $row->canDelete() ) {
			header( 'HTTP/1.0 401 Unauthorized' );
			exit();
		}

		if ( ! $row->delete() ) {
			header( 'HTTP/1.0 500 Internal Server Error' );
			exit();
		}

		$_PLUGINS->trigger( 'activity_onRemoveComments', array( $stream, $row ) );

		if ( ! $silent ) {
			if ( $stream->get( 'type' ) == 'comment' ) {
				echo CBTxt::T( 'This reply has been deleted.' );
			} else {
				echo CBTxt::T( 'This comment has been deleted.' );
			}
		}

		header( 'HTTP/1.0 200 OK' );
		exit();
	}