Wind Speed Converter

COMMENTS FROM THE AUTHOR:
The following is a JavaScript Exercise and though it has been tested no guarantees regarding the accuracy of the calculations are made.
M.P.H. TO K.P.H.
M.P.H. K.P.H.
K.P.H. TO KNOTS
K.P.H. KNOTS
M.P.H. TO KNOTS
M.P.H. KNOTS
KNOTS TO BEAUFORT
KNOTS BEAUFORT