nl_tokens: Returns the element given is XPath - like description .
pl_tokens: function ( xpath ) { var me = this , parts = xpath . split ( '/' ) , regex = me . tagPathRegEx , i , n , m , count , tag , child , el = me . attachTo . document ; el = ( parts [ 0 ] == '~' ) ? el . <mask> : el . getElementById ( parts [ 0 ] . substring ( 1 ) ) ; // remove '#' for ( i = 1 , n = parts . length ; el && i < n ; ++ i ) { m = regex . exec ( parts [ i ] ) ; count = m [ 2 ] ? parseInt ( m [ 2 ] , 10 ) : 1 ; tag = m [ 1 ] . toUpperCase ( ) ; for ( child = el . firstChild ; child ; child = child . nextSibling ) { if ( child . tagName == tag ) { if ( count == 1 ) { break ; } -- count ; } } el = child ; } return el ; }