nl_tokens: Sets up event handlers to add and remove a css class when the mouse is over this element
pl_tokens: function ( className , testFn , scope ) { var me = this , dom = <mask> . dom , hasTest = Ext . isFunction ( testFn ) ; me . hover ( function ( ) { if ( hasTest && testFn . call ( scope || me , me ) === false ) { return ; } Ext . fly ( dom , INTERNAL ) . addCls ( className ) ; } , function ( ) { Ext . fly ( dom , INTERNAL ) . removeCls ( className ) ; } ) ; return me ; }