nl_tokens: Set the opacity of the element
pl_tokens: function ( opacity , animate ) { var me = this ; if ( ! me . dom ) { return me ; } if ( ! animate || ! me . anim ) { me . setStyle ( 'opacity' , opacity ) ; } else { if ( typeof animate != 'object' ) { animate = { duration : 350 , easing : 'ease-in' } ; } me . animate ( Ext . applyIf ( { to : { opacity : opacity } } , animate ) ) ; } return <mask> ; }