nl_tokens: This is used for Blackberry SplitNavigation to monitor the state of child items in the bottom toolbar . if no visible children exist the toolbar will be hidden
pl_tokens: function ( ) { if ( ! this . $backButtonContainer ) { return ; } var i = 0 , backButtonContainer = this . $backButtonContainer , items = backButtonContainer . items , item ; for ( ; i < items . length ; i ++ ) { item = items . <mask> ( i ) ; if ( ! item . isHidden ( ) ) { this . $backButtonContainer . show ( ) ; return ; } } this . $backButtonContainer . hide ( ) ; }