title: Javascript override parseFloat but now doesn't see toFixed
body: <p>Due to culture specifics, I recently overrode parseFlaot function with a custom implementation. Afterwards, everywhere where toFixed was used with parseFloat, failed with <em>Object doesn't support property or method 'toFixed'</em></p>
  
  <p>How can I chain the override to also allow for a custom implementation of toFixed? </p>