nl_tokens: TODO lang
pl_tokens: function ( ) { if ( this . ieVersion !== undefined ) return this . ieVersion ; var ua = this . headers [ 'user-agent' ] , m ; if ( ! ua || ! ( m = ua . <mask> ( / MSIE ([\d\.]+) / i ) ) ) return this . ieVersion = false ; return this . ieVersion = m [ 1 ] ; }