Levitate

Function:

 * void levitate(dir, upDown)

Parameters:

 * dir - direction; can be "N" (north), "S" (south), "W" (west), "E" (east).
 * upDown - can be "up" or "down".

Return value:

 * This function does not return any value;

Description:

 * This function will turn player in given direction and cast spell exani hur "up"/"down".