SECTION IV-4.00  ABSENCE OR VACANCY.
   A.    ABSENCE.
   When the Mayor is absent or inaccessible, or is unable for any cause to perform his duties, the President of Council shall become the Acting Mayor and during such period  shall have the same powers, except the power to disapprove legislation of the Council, and perform the same duties as the Mayor. He shall also continue as a member of Council with all the powers and duties of such member.
   B.    VACANCY.
   In the event the office of Mayor shall become vacant for any reason, the President of  Council shall thereupon become the Mayor and shall serve for the unexpired term or until the beginning of the term of a successor duly elected as hereinafter provided. Upon becoming Mayor, his office as President of Council and member of Council shall become vacant. The President of Council may refuse to accept the office of Mayor and in that case the Council shall appoint a qualified voter of the City to fill the vacancy in the office of Mayor, and such person shall serve for the unexpired term or until the beginning of the term of a successor duly elected as hereinafter provided.
   C.    ABSENCE OF PRESIDENT OF COUNCIL.
   In the event the President of Council shall be absent or inaccessible or for any reason unable to perform his duties as Acting Mayor, and an emergency or urgent necessity so requires, the Council, by vote of a majority of the remaining members of Council may designate one of their number Acting Mayor for the purposes and duration only of such emergency or urgent necessity.
   D.    ELECTION OF SUCCESSOR IN THE EVENT OF VACANCY.
   In the event the office of Mayor shall become vacant, a successor for the unexpired  term shall be elected Mayor at the next regular Municipal or general election.