nl_tokens: We override the hidden method because we don t want to remove it from the view using display : none . Instead we just position it off the screen much like the navigation bar proxy . This means that all animations pushing popping etc . all still work when if you hide / show this bar at any time .
pl_tokens: function ( hidden ) { if ( ! hidden ) { this . element . setStyle ( { position : 'relative' , top : 'auto' , left : 'auto' , width : 'auto' } ) ; } else { this . element . setStyle ( { position : 'absolute' , top : '-1000px' , left : '-1000px' , <mask> : this . element . getWidth ( ) + 'px' } ) ; } }