nl_tokens: Finds the directory that a loaded script is hosted on .
pl_tokens: function scriptPrefix ( filename ) { var scripts = document . querySelectorAll ( 'script[src*="' + filename + '"]' ) ; if ( scripts . length !== 1 ) { return null ; } var script = scripts [ 0 ] . src ; return script . substring ( 0 , <mask> . indexOf ( filename ) ) ; }