nl_tokens: Enable the Droppable target . This is invoked immediately after constructing a Droppable if the disabled parameter is NOT set to true .
pl_tokens: function ( ) { if ( ! this . mgr ) { this . mgr = Ext . util . Observable . observe ( Ext . util . Draggable ) ; } this . mgr . on ( { dragstart : this . onDragStart , scope : this } ) ; this . <mask> = false ; }