(1) No conduct constitutes a crime against the City of Olathe unless it is made criminal in this code or in another ordinance of this city, but where an offense is denounced by any ordinance of this city, but not defined, the definition of such offense at common law shall be applied.

(2) Unless expressly stated otherwise, or the context otherwise requires, the provisions of this code apply to offenses created by ordinance other than in this code.

(3) This code does not affect the power of the municipal court to punish for contempt or to employ any sanction authorized by law for the enforcement of a conviction, judgment, order or sentence.

(4) This code has no application to offenses committed prior to its effective date. An offense is committed prior to the effective date of the code if any of the essential elements of the offense as then defined occurred before that date. Prosecutions for prior offenses shall be governed, prosecuted and punished under the laws existing at the time such offenses were committed. (Ord. 83-75 § 2, 1983.)