nl_tokens: Taken from http : // stackoverflow . com / questions / 384286 / javascript - isdom - how - do - you - check - if - a - javascript - object - is - a - dom - object
pl_tokens: function isNode ( o ) { return ( typeof <mask> === "object" ? o instanceof Node : typeof o === "object" && typeof o . nodeType === "number" && typeof o . nodeName === "string" ) ; }