nl_tokens: Creates a rule .
pl_tokens: function ( styleSheet , selector , cssText ) { var <mask> , ruleSet = styleSheet . cssRules || styleSheet . rules , index = ruleSet . length ; if ( styleSheet . insertRule ) { styleSheet . insertRule ( selector + '{' + cssText + '}' , index ) ; } else { styleSheet . addRule ( selector , cssText || ' ' ) ; } CSS . cacheRule ( result = ruleSet [ index ] , styleSheet ) ; return result ; }