(2) Cities which have not by ordinance established such salaries shall fix the salaries of council members and mayor at the earliest date legally possible.(4) The council may at any regular meeting increase or decrease the salary of the members of the council, including the mayor, by an amount not to exceed 20 percent of the salary established prior to the commencement of the term to which such increase or decrease is applicable.1985 a. 135 s. 83 (2); 2009 a. 177.