(a)(1) The Tax Assessor of Marion County is hereby authorized to take the necessary action to merge the budgetary operations and functions of his or her office. Hereafter, the office shall be financed on a pro rata share basis from the proceeds of state, county, and municipal ad valorem taxes collected in the county. Provided, however, state pro rata cost participation shall be limited to all of the following:
a. Officials' salaries in accordance with Section 40-6A-2.
b. The cost of appraisal and mapping functions.
(2) This section is not intended to affect any other county office.
(b) The provisions of this section are supplemental. It shall be construed in pari materia with other laws regulating the tax assessor's office in Marion County; however, those laws or parts of laws which are in direct conflict or inconsistent herewith are hereby repealed.