(1) In civil cases each opposing side shall have three peremptory challenges, but co-parties having antagonistic interests shall have three peremptory challenges each.

(2) If one or two additional jurors are called, the number of peremptory challenges for each side and antagonistic co-party shall be increased by one.

(3) After the parties have been given the opportunity of challenging jurors for cause, each side or party having the right to exercise peremptory challenges shall be handed a list of qualified jurors drawn from the box equal to the number of jurors to be seated plus the number of allowable peremptory challenges for all parties. Peremptory challenges shall be exercised simultaneously by striking names from the list and returning it to the trial judge. If the number of prospective jurors remaining on the list exceeds the number of jurors to be seated, the cards bearing numbers identifying the prospective jurors shall be placed in a box and thoroughly mixed, following which the clerk shall draw at random the number of cards necessary to comprise the jury or, if so directed by the court, a sufficient number of cards to reduce the jury to the number required by law, in which latter event the prospective jurors whose identifying cards remain in the box shall be empaneled as the jury.